Cascading dropdown with choice type columns

[s44]

Hello, I have 2 SharePoint lists with "Choice" type columns that look like this : 

I would like to create "cascading dropdown" on Power Apps like this:

However, I would like the choice of the "Sous-Filiere" category to depend on the choice of the "Filiere" category, but I cannot do this at all. 😞
On my Power Apps, the "Filiere" category comes from the same list as the "Categorie" category.

Can you help me please? Thanks in advance !

[v-xiaochen-msft · Accepted solution]

Hi @s44 ,

Is this what you want?

Best Regards,

Wearsky