i have a problem with gretl_var.

first with the function ar_model i can specify the lags 

FOR EXAMPLE: Yt= Yt-3 + Y t-2 + Yt-6 +CONST    but with gretl I CAN'T  i just enter the lag order .

HOW can i specify the lags .

my project work personalized lags please answer me .

thanks for all