SRL Archive - SRL Old School RuneScape

it keeps giving me this error not sure what to do

Exception in Script: Operator expected at line 166, column 7 in file "C:\Simba\SRL-OSR\SRL\misc\Debug.Simba"

heres the code

      164 begin
      165   FastSetPixel(ClientBMP, x, b.y1, selColor)
      166   FastSetPixel(ClientBMP, x, B.y2, selColor)
      167 end;        

If you are running this in lape, there should be a semicolon after every statement.
iirc OSR is meant to be run in PS