Change the above statement to:
WebUI.comment("Lead ID is: ${sLeadID_Accept}") // notice the curly parenthesis
or
WebUI.comment("Lead ID is: " + sLeadID_Accept)
Change the above statement to:
WebUI.comment("Lead ID is: ${sLeadID_Accept}") // notice the curly parenthesis
or
WebUI.comment("Lead ID is: " + sLeadID_Accept)