filtering one collection from a value of another collection

[StevenT]

My biggest challenge at this time is filtering a collection from a value in another colllection.

1) I create collections one

     1-  ClearCollect(CableNumbers,('Cable Trace Form'.CableNumber));

2) I want to use the value from CableNumber that the user chooses and  filter a second collection by that value

     2 - ClearCollect(CableFrom,('Cable From'.FromDescription),('Cable From'.CableFrom),('Cable From'.CableNum));

Collection 1 is working as expected, but how do i go foward and create a second filter based off of the chosen value in Collection 1? 

This is my issue and any suggestion would be appreciated. I've been trying to set it up without success.

[Anonymous]

In the Gallery1.Items put the following function:

Filter(
  CableForm,
  CableNum = First(CableNumbers).CableNumber
)

[StevenT]

Thanks for this reply.  The value i want to filter on is in a selected value in a drop down, not in a gallery. how would I use this formula if I wanted it to filter off of the object picked in the drop down?

I tried your code you've included here and though it's not failing, how would find the data based on the speicific entry chosen?

[Anonymous]

Hi @StevenT

If you want to filter based on selected value in a dropdown change your filter function to this:

Filter(
  CableForm,
  CableNum = DropDown.Selected.Value
)

I am not sure if I understood what you want to do correctly, maybe a screenshot would help?

[StevenT]

Thanks and yes, it's always better to see a screen print