Set description based on multiselect fields

Hi,

I had created a script to populate the fields into description.

However, i can't get the multiselect value to the description. It appeared "Undefined".

Screenshot of the form

And here is the script

var description_content=$CS.getDescription();

$CS.setDescription(description_content + "I'm requesting SSLVPN as per information below. SSLVPN Type:" + $CS.getValue("WorkOrder_Fields_UDF_CHAR36") + " " + "Requester Name (External Only):" + $CS.getValue("WorkOrder_Fields_UDF_CHAR37") + " " + "Requester NRIC/Passport No (External Only):" + $CS.getValue("WorkOrder_Fields_UDF_CHAR38") + " " + "Requester Company (External Only):" + $CS.getValue("WorkOrder_Fields_UDF_CHAR39") + " " + "Requester Country (External Only):" + $CS.getValue("WorkOrder_Fields_UDF_CHAR40") + " " + "SSLVPN Access to MY HQ:" + $CS.getValue("WorkOrder_Fields_UDF_CHAR41") + " " + "SSLVPN Access to MY CSC:" + $CS.getValue("WorkOrder_Fields_UDF_CHAR42") + " " + "SSLVPN Access to SG HQ:" + $CS.getValue("WorkOrder_Fields_UDF_CHAR43") + " " + "SSLVPN Access to Store:" + $CS.getValue("WorkOrder_Fields_UDF_CHAR44") + " " + "Reason for access:" + $CS.getValue("WorkOrder_Fields_UDF_CHAR45") + " ");