Thanks, Georgios. You solved my puzzle.

It seems the 2D Mapple input is dangerous to use.

I modified the code buy using cut and post but didn't

realize that kind typo happend and the Mapple (2D input)

even didn't show "what I realy typed". If I didn't change to 1D

input, I would never figured it out, especially when it's hiden somewhere

in a very long euqation, like the one I did.

I would be better to work by using 1D Mapple input.

Thanks again.

Thanks, Georgios. You solved my puzzle.

It seems the 2D Mapple input is dangerous to use.

I modified the code buy using cut and post but didn't

realize that kind typo happend and the Mapple (2D input)

even didn't show "what I realy typed". If I didn't change to 1D

input, I would never figured it out, especially when it's hiden somewhere

in a very long euqation, like the one I did.

I would be better to work by using 1D Mapple input.

Thanks again.