in the js-Area you can write in vbscript
This use the whshell-Interpreter from Window
More information see vbscript
Example: set string about all items in the itemlist
// set vbscript-Variable
vbs.ivar=""
// beas-Script-Loop
for ll_loop=1 to <dw_1.rowcount>
// add beas-Script-Variable to ivar-Variable
vbs=ivar=ivar+"<dw_1.item.itemcode:[ll_loop].value> "
next
// display the
message=<vbs.ivar>