IF varcheck removing @

Example from get product keys
``` 
SET: @ProductKeyExists@ = MATCH(@ProductKeyData@ PATTERN \(\d+,\s'[^']+',\s'[^']+',\s'[^']+',\s'[^']+',\s\d+\))
  IF ProductKeyExists@ Not =  THEN Jump to :EndRunVBS
    LOG: The Get Product Keys script did not create a string containing Product Key information. Exiting Script
```