sws: allow underscore in param values

public_html/deployment/classes/sws.class.php

@@ -173,7 +173,7 @@ class sws {
      * @return boolean
      */
     private function _verifyParamValue($sParamValue){
-        $sOKChars='a-z0-9\"\{\}\[\]\.\,\ \:\-\+';
+        $sOKChars='a-z0-9\"\{\}\[\]\.\,\ \:\-\+\_';
         /*
         $sOKChars='a-z0-9\"\`\'\{\}\[\]\.\,\ \:\-\+'
         .'\<\>\='