Passing an Internal Tag through a Script

I am new to using Siemens automation technology and using this forum. My question might not be in the correct thread.

I have an I/O Field that my end user will input a three digit number into. The three digit number corresponds to a tag in my PLC. I am wanting to take that three digit number and populate other text boxes on my screen. A snippet of my code is below.

Dim r

r=SmartTags("CarrierDummy")

HmiRuntime.Screens("CarrierLookup").ScreenItems("txtKitNum").ProcessValue = SmartTags("KitNum_" & r).Value

'End of Code

SmartTags("CarrierDummy") is linked to the user input I/O Field

I am using TIAPortal V13 Update 4, STEP 7 Professional Version 13 Update 4,WinCC Advanced Version V13 Update 4. Using an Allen Bradley PLC not a Siemens PLC.

Any suggestions would be appreciated. I have tried suggestions on threads I have found but nothing seems to be working.

Thanks for your feedback! Would you suggest using the Update Tag as a scheduled task or is there a line of code we would use in our existing script?

Thanks,

Cheryl

We have around 2000 tags that we have set to 'cycle continous' this is really affecting the performance and respond time of our project as you can imagine.

The tags do not need to be to scanned continuously however I am having an issue figuring out the best way to use 'On Demand' aquisition mode for these tags. I could use the UpdateTag event function however it is limited because there are only 100 different Update ID's (1-100) with each Update ID only able to be assigned to a single tag. Do you have a way to use 'On Demand' rather that continous cycling, I think there is a way to use arrays, but I haven't quite figured it out.

Regards,

Roman