diff -r fd1354e2a045 -r a2732027afb3 www-thermferm/global.php
--- a/www-thermferm/global.php	Wed May 31 16:29:52 2017 +0200
+++ b/www-thermferm/global.php	Wed Jun 07 23:06:47 2017 +0200
@@ -48,6 +48,7 @@
 	$cmd[] = "PORT,".$_POST['Port'];
 	$cmd[] = "TEMP_ADDRESS,".$_POST['TempAddress'];
 	$cmd[] = "HUM_ADDRESS,".$_POST['HumAddress'];
+	$cmd[] = "TEMP_HUM_IDX,".$_POST['TempHumIdx'];
 	if (isset($_POST['LCDcols']))
 	    $cmd[] = "LCD_COLS,".$_POST['LCDcols'];
 	if (isset($_POST['LCDrows']))
@@ -60,6 +61,7 @@
     unset($_POST['Port']);
     unset($_POST['TempAddress']);
     unset($_POST['HumAddress']);
+    unset($_POST['TempHumIdx']);
     unset($_POST['LCDcols']);
     unset($_POST['LCDrows']);
     unset($_POST['key']);
@@ -72,7 +74,7 @@
 
     if (isset($_POST['Name']) && isset($_POST['Port']) &&
 	isset($_POST['TempAddress']) && isset($_POST['HumAddress']) &&
-	isset($_POST['key'])) {
+	isset($_POST['TempHumIdx']) && isset($_POST['key'])) {
 
 	if ($_POST['key'] == 'Cancel')
 	    return 99;
@@ -203,6 +205,12 @@
 		$outstr .= '        </select></td>'.PHP_EOL;
 		$outstr .= '       </tr>'.PHP_EOL;
 	    }
+	    if ($f[0] == "TEMP_HUM_IDX") {
+		$outstr .= '       <tr class="editor">'.PHP_EOL;
+		$outstr .= '        <td class="editname">Temp/Humidity domoticz index</td>'.PHP_EOL;
+		$outstr .= '        <td class="editfield"><input type="text" name="TempHumIdx" size="5" value="'.$f[1].'"></td>'.PHP_EOL;
+		$outstr .= '       </tr>'.PHP_EOL;
+	    }
 	    if ($f[0] == "LCD_COLS") {
 		$outstr .= '       <tr class="editor">'.PHP_EOL;
 		$outstr .= '        <td class="editname">LCD columns</td>'.PHP_EOL;