api_GetWindowText

Hey, what am I doing wrong here:

Local hwnd% = SystemProperty("AppHWND")

api_SetWindowText(hwnd,"BOBsasd")
	

Local bank%
	Local caption_length%
	Local i%
	Local Dave$ = ""

	bank = CreateBank(254)
	caption_length = api_GetWindowText(hwnd,bank,254)
	For i = 0 To caption_length
		
		Dave = Dave + Chr((PeekByte(bank,i)))
		
	Next
	FreeBank bank

	Print Dave$

It sets it fine, and returns that it is using 7 characters when it reads it back, but I can't get them to process it. It just returns 0000000 when I take away the chr conversion.

Any clues?