Currently we only can add 19 pieces input parameters to the PowerApps (V2) trigger what is very few.
You could send your inputs as JSON objects, instead of individual inputs, and thus send as many "inputs" as you want:
So as an example, you create a flow with 1 input:
Then you take that input and "convert" it to a json object, using the json() expression function.
And then you can pull your values from that object:
From your canvas app you can then send "inputs" to your flow by having them as a record and using the JSON() function on that record:
The flow run, seen below:
Thank you for your tip.
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