In article "passing user types to su" (on 18.01.97), Tim Hutzler@1:119/88 
says:
Hello Tim !!
> | Error 481: Parameter mismatch                  |
>
> DECLARE FUNCTION HexOut(Dbyte) AS STRING
>
> UNION Dbyte
>
> END UNION
>
> DIM D4 AS Dbyte
>
> FUNCTION HexOut (h AS Dbyte) AS STRING 'here's the problem
>
> END FUNCTION
Declare the FUNCTION after your UNION, I think that's all.
Regards,
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                              /  h o m a s
email       : author@pbsound.snafu.de
www         : http://www.snafu.de/~pbsound/ (PowerBASIC's Home in Germany)
Cooming soon: PowerBASIC.GER
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