Parameter For Coding Error

Hello everyone. I need to add a code in the scripting manager of ARC that DJ gave me for a project I'm working on. However, I get an error message that tells me that it needs to have 1 parameter in the line of coding, but I have passed 0 parameters. What do I need to edit in the code so that it saves and works accurately? Thanks.

Code:

:Start

IF (GetPing(d0, d1) < 50) Set(d2, on) SayWait("Warning, object detected"

Sleep(2000)

Set(d2, off) ENDIF

Sleep(500)

Goto(Start)