Thanks

This is how I hot it working, you were right about the A being 65
Code:
HEXConvert:
IF DATAA = 65 THEN
	DATAA = 10
	RETURN
ENDIF
IF DATAA = 66 THEN
	DATAA = 11
	RETURN
ENDIF
IF DATAA = 67 THEN
	DATAA = 12
	RETURN
ENDIF
IF DATAA = 68 THEN
	DATAA = 13
	RETURN
ENDIF
IF DATAA = 69 THEN
	DATAA = 14
	RETURN
ENDIF
IF DATAA = 70 THEN
	DATAA = 15
	RETURN
else
	DATAA = DATAA - 48
ENDIF

RETURN