Triggers: Selection in List Box 1 will change the Selection in List Box 2

[MajoMacs]

Hello - I have two list boxes and I want to change selection in list box 1 every time I make selection in list box 2.

E.G. - List Box 1 is Products and I have four options Product 1, Product 2, Product 3, and Product 4. List Box 2 is Pipeline by and I have five options Pipeline 1, Pipeline 2, Pipeline 3, Pipeline 4 and Pipeline 5. 

I want that every time I select Pipeline 2, selection in  Products will change to Product 3.

Thanks in advance!

[dplr-rn]

Share a sample app please

[jonathandienst]

This will happen automatically if the two fields are associated correctly.

[MajoMacs]

This is what I have - is it possible to do triggers on this kind of list boxes?

[MajoMacs]

Can you check if it is possible to associate this two list boxes?

[dplr-rn]

It is possible. see attached. check document properties--trigger--field event triggers

but have to ask. isnt the 2 fields related in soem way in the actual datamodel? if so you wouldnt need the trigger