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Cascading Combo Box with the second combo box in a Gallery not filtering

We have many departments, based on the departments function they are allowed to order specific supplies. I'm building a powerapp to that end. I have two SharePoint lists. Supplies and SupplyRequests


Supplies has two columns, Department, SupplyItem


SupplyRequests has Department, SupplyItem and OrderQuatity


I have a combo box where users select their department. In a Gallery bellow I have a combo Box that list SupplyItems that I want to Filter based on the Department selected.


Currently I have the supplyItems combo box pulling the supplyitems from the supplies list but they are not being filtered. When I try to filter the data I keep getting errors.


Any examples would be greatly appreciated!



Dual Super User II
Dual Super User II

Hi @sterbella 


check this post



Reza Dorrani


If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

Community Support
Community Support

Hi @sterbella ,

Could you tell me the data type of 

Supplies: Department, SupplyItem

SupplyRequests : Department, SupplyItem and OrderQuatity?  (5 fields)

Since both the two lists have Department, SupplyItem field, I am a little confused.

Could you describe more clearly about filtering SupplyItem(from which list) based on Department(from which list)?

                show me the Items of Department combo box?


Best regards,

Community Support Team _ Phoebe Liu


Community Support Team _ Phoebe Liu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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