Appending Image to fill a Contour map

I need to fill the contour plot. This can be done through Graph--> Append Image or Fill Between XYZ Contour. Every time I perform the operations, there will be a dialogue box ask me to input some parameters. Normally, I will select NO for " flat color between contours?", then input 1000 for "number of rows" and "number of cols". It is not a problem for one operation. Now I need to do the same thing for hundreds of the contour plots. Is there a way to skip the dialogue box so that Igor will take my inputs (NO, 1000, 1000 ) as default setting? Any comments are welcome, thanks!