Set interarrival style and time with gui

Hi,

can I set the inter arrival time directly from the gui?

I've tried this by adding a hotlink to

MAIN:/project/model/Quelle>variables/interarrivaltime/return/1

in the tree on the right side of the row one tree structure under return there is the name of the distrubutuion (for example exponential) and on the left side there is a number which meaning I don't know.

The link above just gives me this number left of the name of the distribution.

In the directory interarrivaltime is the command for the interarrivaltime, but how can I change this?

Thanks!

I got it:

I can edit the code in the tree directly from the textbox in the gui