I created a flow with no parameters. I added this flow to the Action of a button in a PowerApp. I went back and added a parameter to the Flow and saved it. When reloading the PowerApp, it will not let me pass the parameter. Any ideas? I guess I can just recreate the Flow from scratch and it will work, but how annoying.
Yes I think when you add the Flow to PowerApps and change it afterwards, you'll need to re-add the Flow to PowerApps to capture the changes.
Also note that when you add a Flow, as you may have noticed, when the Flow run function comes up in PowerApps it will wipe any other functions you may have specified (e.g. if you have multiple actions triggered as part a button OnSelect including Flow). In that case I recommend copying your function into notepad first, then 'Get Flow' (which wipes everything else), then you can add the remaining functions back in. 🙂