Dear Gretl community, I keep getting errors on my if statements.  The program responds "error evaluating if", as if it doesn't recognize the command, yet turns red when i type it.  Here's the code I am using: if state=13     delta=.38 elif state=16     delta=.35 elif state=31     delta=.30 elif state=84     delta=.26 else delta=0 endif I've been over the syntax in the user manuals and cannot understand what I am doing wrong.  Any insights on this issue are greatly appreciated.  Thanks.