Question: What am I doing wrong? (for loop)

Dear Maple users

I am having a problem with a simple for loop. I cannot seem to figure out what is wrong. I want to define a number of Random Variables of the ChiSquare kind, with increasing number of degrees of freedom as the figure below suggest. When defining them one line after another everything works well. My idea was then to make a for loop, since I might want many Random Variables defined. It doesn't work however in the way I do it. All the PDF's turn out to be Dirac functions ... What am I doing wrong? It might be a basic thing about loops or the way the Maple Engine understand my statements, but I dare to ask the question anyway.

NB! By the way: I am using Document Mode and use Ctrl+Shift to write more lines in the same command line.