help with MONTE-CARLO, oceanxl script

hi , i have 2 problems, maybe some can help me: i try to do monte-carlo simulation while sweeping VDD (global varible in my design) and temperature, but until now i didn't succeed. 1) i need to do somthing like that:(psodeo code) for( vdd=0.2 until vdd=0.6){ for(temperature=0 until temperature=200){ monte carlo simulation } } i just need some help with the nesting loop....(I try with SKILL 'while' loop but, every time when i tried to change VDD (global varible) value i got error in my oceanx script. thanks, 2) i also need to the result of the monte-carlo simulatio: all the result that recieve from the process variation and thier amount ( if i do 100 sampling, i need to write to file all the result and the amount of eac resul) so, how can i do it?,,,,to get the data from the graph and write it on file??? thanks, roni