Sending multiple collection data to ms flow using PowerApp.Run(JSON(Coll1) + JSON(Coll2) + JSON(Call3) isn't working

[aman_varama]

Hi, 

I have 5 different collections on powerapps form, all of them are having unique column called ID. all these collections may be different numbers of rows based on user's requirement. 

I need to send all of these collections data to flow in form of  JSON, i was able to send one collection data using PowerApp.Run(JSON(Collection1)), however not sure how to send multiple collections to flow. 

Can anyone direct me to the right path ?

any help on this is highly appreciated.

Thank you!

Aman

[v-yutliu-msft · Accepted solution]

Hi @aman_varama ,

Do you want to use multiple collections json as parameter to run flow in PowerApps?

I'm afraid it's not supported to send multiple collections directly to flow in PowerApps currently.

Currently, Microsoft Flow only accepts String Text value as Parameter value passed from an app.

As an alternative way, I suggest you concatenate these json(collection) into a Single one String value with a specific separator,

then pass this to flow. Within the flow, you could use Split function to split these collections.

For example:

PowerApp.Run(Concatenate(JSON(Collection1),"|",
                         JSON(Collection2),"|",
                         JSON(Collection3),"|"
                         ))

Here's a doc about how to use split function in flow for your reference:

https://www.techmikael.com/2017/05/saving-collection-of-images-from.html

Here's a similar issue for your reference:

https://powerusers.microsoft.com/t5/Building-PowerApps-Formerly/Using-Flow-to-send-collection-data-i...

Best regards,

[aman_varama]

Thank you @v-yutliu-msft , that helped me...