diff --git a/common.php b/common.php
index 19613c0..f7cd53f 100644
--- a/common.php
+++ b/common.php
@@ -6,65 +6,66 @@ global $drive;
 
 global $EnvConfigs;
 $EnvConfigs = [
+    // 1 is a switch, 0 input string
     // 1 inner, 0 common
     // 1 showed/enableEdit, 0 hidden/disableEdit
     // 1 base64 to save, 0 not base64
-    'APIKey'            => 0b000, // used in heroku.
-    'SecretId'          => 0b000, // used in SCF/CFC.
-    'SecretKey'         => 0b000, // used in SCF/CFC.
-    'AccessKeyID'       => 0b000, // used in FC.
-    'AccessKeySecret'   => 0b000, // used in FC.
-    'HW_urn'            => 0b000, // used in FG.
-    'HW_key'            => 0b000, // used in FG.
-    'HW_secret'         => 0b000, // used in FG.
-    'HerokuappId'       => 0b000, // used in heroku.
+    'APIKey'            => 0b0000, // used in heroku.
+    'SecretId'          => 0b0000, // used in SCF/CFC.
+    'SecretKey'         => 0b0000, // used in SCF/CFC.
+    'AccessKeyID'       => 0b0000, // used in FC.
+    'AccessKeySecret'   => 0b0000, // used in FC.
+    'HW_urn'            => 0b0000, // used in FG.
+    'HW_key'            => 0b0000, // used in FG.
+    'HW_secret'         => 0b0000, // used in FG.
+    'HerokuappId'       => 0b0000, // used in heroku.
 
-    'admin'             => 0b000,
-    'adminloginpage'    => 0b010,
-    'autoJumpFirstDisk' => 0b010,
-    'background'        => 0b011,
-    'backgroundm'       => 0b011,
-    'disableShowThumb'  => 0b010,
-    //'disableChangeTheme'=> 0b010,
-    'disktag'           => 0b000,
-    'hideFunctionalityFile'=> 0b010,
-    'timezone'          => 0b010,
-    'passfile'          => 0b011,
-    'sitename'          => 0b011,
-    'customScript'      => 0b011,
-    'customCss'         => 0b011,
-    'customTheme'       => 0b011,
-    'theme'             => 0b010,
-    'useBasicAuth'      => 0b010,
-    'referrer'          => 0b011,
-    'forceHttps'        => 0b010,
-    'globalHeadOmfUrl'  => 0b011,
-    'globalHeadMdUrl'   => 0b011,
-    'globalReadmeMdUrl' => 0b011,
-    'globalFootOmfUrl'  => 0b011,
-    'bcmathUrl'         => 0b011,
+    'admin'             => 0b0000,
+    'adminloginpage'    => 0b0010,
+    'autoJumpFirstDisk' => 0b1010,
+    'background'        => 0b0011,
+    'backgroundm'       => 0b0011,
+    'disableShowThumb'  => 0b1010,
+    //'disableChangeTheme'=> 0b1010,
+    'disktag'           => 0b0000,
+    'hideFunctionalityFile'=> 0b1010,
+    'timezone'          => 0b0010,
+    'passfile'          => 0b0011,
+    'sitename'          => 0b0011,
+    'customScript'      => 0b0011,
+    'customCss'         => 0b0011,
+    'customTheme'       => 0b0011,
+    'theme'             => 0b0010,
+    'useBasicAuth'      => 0b1010,
+    'referrer'          => 0b0011,
+    'forceHttps'        => 0b1010,
+    'globalHeadOmfUrl'  => 0b0011,
+    'globalHeadMdUrl'   => 0b0011,
+    'globalReadmeMdUrl' => 0b0011,
+    'globalFootOmfUrl'  => 0b0011,
+    'bcmathUrl'         => 0b0011,
 
-    'Driver'            => 0b100,
-    'client_id'         => 0b100,
-    'client_secret'     => 0b101,
-    'sharepointSite'    => 0b101,
-    'shareurl'          => 0b101,
-    //'sharecookie'       => 0b101,
-    'shareapiurl'       => 0b101,
-    'siteid'            => 0b100,
-    'refresh_token'     => 0b100,
-    'token_expires'     => 0b100,
-    'activeLimit'       => 0b100,
-    'driveId'           => 0b100,
+    'Driver'            => 0b0100,
+    'client_id'         => 0b0100,
+    'client_secret'     => 0b0101,
+    'sharepointSite'    => 0b0101,
+    'shareurl'          => 0b0101,
+    //'sharecookie'       => 0b0101,
+    'shareapiurl'       => 0b0101,
+    'siteid'            => 0b0100,
+    'refresh_token'     => 0b0100,
+    'token_expires'     => 0b0100,
+    'activeLimit'       => 0b0100,
+    'driveId'           => 0b0100,
 
-    'diskDisplay'      => 0b110,
-    'diskname'          => 0b111,
-    'diskDescription'   => 0b111,
-    'domain_path'       => 0b111,
-    'downloadencrypt'   => 0b110,
-    'guestup_path'      => 0b111,
-    'domainforproxy'    => 0b111,
-    'public_path'       => 0b111,
+    'diskDisplay'      => 0b0110,
+    'diskname'          => 0b0111,
+    'diskDescription'   => 0b0111,
+    'domain_path'       => 0b0111,
+    'downloadencrypt'   => 0b1110,
+    'guestup_path'      => 0b0111,
+    'domainforproxy'    => 0b0111,
+    'public_path'       => 0b0111,
     'fileConduitSize'   => 0b110,
     'fileConduitCacheTime'   => 0b110,
 ];
@@ -106,28 +107,35 @@ $timezones = array(
 function isCommonEnv($str)
 {
     global $EnvConfigs;
-    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b100 ) ? false : true;
+    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b0100 ) ? false : true;
     else return null;
 }
 
 function isInnerEnv($str)
 {
     global $EnvConfigs;
-    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b100 ) ? true : false;
+    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b0100 ) ? true : false;
     else return null;
 }
 
 function isShowedEnv($str)
 {
     global $EnvConfigs;
-    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b010 ) ? true : false;
+    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b0010 ) ? true : false;
     else return null;
 }
 
 function isBase64Env($str)
 {
     global $EnvConfigs;
-    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b001 ) ? true : false;
+    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b0001 ) ? true : false;
+    else return null;
+}
+
+function isSwitchEnv($str)
+{
+    global $EnvConfigs;
+    if (isset($EnvConfigs[$str])) return ( $EnvConfigs[$str] & 0b1000 ) ? true : false;
     else return null;
 }
 
@@ -1617,6 +1625,13 @@ output:
             $frame .= '
                 </select>
                 ' . getconstStr('EnvironmentsDescription')[$key];
+        } elseif (isSwitchEnv($key)) {
+            $frame .= '
+                <select name="' . $key . '">
+                    <option value=""></option>
+                    <option value="1"' . (getConfig($key)?' selected="selected"':'') . '>true</option>
+                </select>
+                ' . getconstStr('EnvironmentsDescription')[$key];
         } /*elseif ($key=='domain_path') {
             $tmp = getConfig($key);
             $domain_path = '';
@@ -1699,26 +1714,32 @@ output:
     <input name="_admin" type="hidden" value="">
     <input type="hidden" name="disk" value="' . $disktag . '">';
             foreach ($EnvConfigs as $key => $val) if (isInnerEnv($key) && isShowedEnv($key)) {
-                if ($key=='diskDisplay') {
-                    $frame .= '
+                $frame .= '
     <tr>
         <td><label>' . $key . '</label></td>
-        <td width=100%>
+        <td width=100%>';
+                if ($key=='diskDisplay') {
+                    $frame .= '
             <select name="' . $key . '">
                 <option value=""' . (getConfig($key, $disktag)===''?' selected':'') . '> </option>
                 <option value="hidden"' . (getConfig($key, $disktag)==='hidden'?' selected':'') . '>hidden</option>
                 <option value="disable"' . (getConfig($key, $disktag)==='disable'?' selected':'') . '>disable</option>
             </select>
-            ' . getconstStr('EnvironmentsDescription')[$key] . '
-        </td>
-    </tr>';
+            ' . getconstStr('EnvironmentsDescription')[$key];
+                } elseif (isSwitchEnv($key)) {
+                    $frame .= '
+            <select name="' . $key . '">
+                <option value=""></option>
+                <option value="1"' . (getConfig($key)?' selected="selected"':'') . '>true</option>
+            </select>
+            ' . getconstStr('EnvironmentsDescription')[$key];
                 } else {
                     $frame .= '
-    <tr>
-        <td><label>' . $key . '</label></td>
-        <td width=100%><input type="text" name="' . $key . '" value="' . getConfig($key, $disktag) . '" placeholder="' . getconstStr('EnvironmentsDescription')[$key] . '" style="width:100%"></td>
-    </tr>';
+            <input type="text" name="' . $key . '" value="' . getConfig($key, $disktag) . '" placeholder="' . getconstStr('EnvironmentsDescription')[$key] . '" style="width:100%">';
                 }
+                $frame .= '
+        </td>
+    </tr>';
             }
             $frame .= '
     <tr><td></td><td><input type="submit" name="submit1" value="' . getconstStr('Setup') . '"></td></tr>