DATEADD CON PARAMETROS - NO FUNCIONA

Hi, the values ​​are integers. And the measure is: SELECTEDVALUE(Parameters[selected_values],0). Still, when I click on the filter, it doesn't seem to select it, it shows it fine on a card, but it doesn't take it to the function. The function returns the same date of origin, it does not add the N days.

Thanks Lukiz, its goes on  English:

"""

Is it possible to make the DATEADD function work with a parameter instead of an exact number? I'm trying this but it doesn't work:

Due_date_extended = dateadd('Ventas'[dueDate], Parametros[selected_values], day)

Parametros[selected_values] is a SELECTVALUE of correlative numbers ​​between 1 and 20.

I inserted that same value in a filter to be able to select one at a time, and make it the chosen one to "work" in the DATEADD function, but it does not work, it seems, despite being selected, to be delivering BLANK to the function.

The selectvalue seems correct as if I drop it on a card it shows the chosen value.

Any suggestions to return a dynamic DATEADD with parameters who can be selected in a filter?"""

I dont have relation between tables PARAMETERS and VENTAS. But, Parameteres should works anyway or not? i mean, is a Select variable , can it  iterate whit a function of date?

Any idea? i dont get it yet :S