Limit the values of fix version field using other field

[Dan27]

Hello,

I need to limit the options of fix version field according to 'Product Name' field (single select list).

How can I do it? I have a field with all of the options of these two fields (examples: "1.1.1_productOne" , "1.1.2_productOne", 1.1.1_productTwo")

So I can find the possible options using script.

But how can I limit the options of fix version?

Thanks you,

Daniel 

[Nic Brough -Adaptavist- · Accepted solution]

Behaviours can amend a list of possible options, but be aware that it does not affect all places that you can edit or set a version.

[Dan27]

I used validator in Create and Done transition. I can't use behaviours because fix version is a system field.

Thanks!