Thanks, but the UDF was very long (advanced) for this. Later i found the UDF DIRLIST() and I modified that one a little.

IF EXIST("H:\foldername\FILE*.cmd")
DIRLIST("H:\foldername\FILE*.cmd")
SHELL "H:\foldername\" + $searchedfile
ENDIF

FUNCTION DIRLIST($directoryname)
DIM $filename, $counter
DIM $filelist[1]
$counter=1
$filename=DIR($directoryname)
WHILE $filename<>"" AND @ERROR=0
REDIM PRESERVE $filelist[$counter]
$searchedfile = $filename
$filelist[($counter-1)]=$filename
$counter=$counter+1
$filename=DIR("")
LOOP
ENDFUNCTION