delphi example but should give you the idea-- you need to pass the parameters in a string--make sure you put the ";" at the end!

Code:

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Panel2 := pan_create('bmap = levelcode3.pcx;pos_x = 325;
          pos_y = 105;flags=visible;
          button=15,20,ThumbNail3.pcx,ThumbNail3.pcx,ThumbNail3.pcx,
          Null,Null,Null;',
          _VAR(1));

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