Find multiple strings with a string

I think you'll have to use a combination of "SELECTSTR" (Use this function to retrieve a substring from a comma-separated string) and "STRPOS" (Use this function to search for a substring inside a string).

C/SIDE help can tell you more about these statements.

You can put the SELECTSTR into an iteration by counting the comma's. You can do that by using statements like:
strCommas := DELCHR(String,"=",DELCHR(String,'=',','));
intNumberOfCommas := STRLEN(strCommas );

I hope this is useful for you.

This is an untested sample, you may have to adjust it.

OldStr := '#1234,#4567,#3456-ABJ,#9000,#9876-MEE';

//CommaSep and Hyphon are Integers
REPEAT
    // Find The Comma
    CommaSep := STRPOS(OldStr,',');
    IF CommaSep <> 0 Then Begin
        // Find the Hyphon
        Hyphon := STRPOS(COPYSTR(OldStr,'-',1,commaSep));
        // Add Good Value add to the String
        IF Hyphon = 0 THEN
            NewStr := NewStr +  CopyStr(OldStr,1,CommaSep+1);
        //Trim Old string 
        OldStr := CopyStr(OldStr,CommaSep+1);
   End;   
UNTIL CommaSep = 0;

// Deal with the Last String
 Hyphon := STRPOS(COPYSTR(OldStr,'-'));
 // Add Good Value add to the String
 IF Hyphon = 0 THEN
     NewStr := NewStr +  OldStr;
Message('%1',NewStr);