Ventana software support forum

Hi, I don't know work with dates in Vensim PLE. Is it possible? Thank you very much

Can you be a bit more specific? How exactly do you want to use dates?

Tony.

I have to do a model about banks. I have to indicate in my model the dates when I get money at the bank , because I can get money or not deppending of the date.

I am Spanish, my English is a little bad. I expect that you understanding me.

Thank you very much

You cannot work with dates directly, but it is easy to just look at month number, year number, day number etc.

Then you can use a simple "if then else" statement to trigger money coming in. The "Modulo" function is also useful.

Tony.

Then, I have to use variables to indicate days, months and year... or not?

Yes, you have to use variables to represent days, months and years.
It is a weekness of Vensim, to my opinion not to have a built in calendar, where you could define an auxiliary as a date.
But I think it is due to the strict continuous way Vensim works.
Dates are not continuous.
Anyhow that would be indeed very practical to have a calendar built in.

J.J. Laublé