i tried this in WinCC v13 but its not adding tags

Dim a, b, c

Set a=HmiRuntime.Tags("HMI_Tag_1")

a.read

Set b=HmiRuntime.Tags("HMI_Tag_2")

b.read

Set c=HmiRuntime.Tags("HMI_Tag_ 3)

C.Value=a.Value + b.Value

c.Write

Where HMI_Tag_3 are internal tags

------------------------------------------------------------------------------------------
Split from WinCC sum operation of 2 variable values.

Hello Usman,

please have a look at this post:

https://support.industry.siemens.com/tf//ww/en/posts/what-do-we-need-to-solve-your-problem/141582/?page=0&pageSize=10

Best regards,

Nzett11

Closed cause question posted twice.

The second thread with the subject Add value of tags in winCC using Vb scritp is published within the conference SIMATIC WinCC (TIA Portal).