Invalid Client ID

When I execute this line of code:

Dim _nAlarmNum as RapidDomain.RapidData

_nAlarmNum = _robotController.Rapid.GetRapidData(“T_ROB1”,“MainModule”,“nAlarmNum”)

I can’t use _nAlarmNum.Value because it tells me “invalid client id”. WHY IS THIS?? I must be missing something easy.

See this post:

http://forums.robotstudio.com/forum_posts.asp?T ID=1563&PN=1