Convert string type to integer

[mc81773]

I want to convert the string type to integer and then add 1 to that number. Then convert it back to string.
This is my code now and doesn't work.

'Read the control file record
ControlRecord = Controlfile.ReadLine
'Get the control number, This is string type
LastControlNum = Mid(ControlRecord, 25, 7)
LastControlNum = LastControlNum + 1

Thanks in advacne

 

[PerlIsGood]

Try:

LastControlNum = CInt(LastControlNum) + 1

And convert back by using:

NewStr = CStr(LastControlNum)