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UpdateContext not working consistently

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Posted on by ingrtodd

I have several buttons in my canvas app that trigger different containers using UpdateContext. For example, I have a Reset button on my app that displays a "dialog" to the user. The OnSelect action for the reset button simply runs the following:

 
UpdateContext({varShowResetWarning: true});

The reset dialog is really a container whose Visibility property is set to varShowResetWarning.

What's been happening lately is the buttons don't work unless I go into each container and change the Visibility property in some way. For example, if I backspace the g in the variable and put it back in, the button will start working.

If I start a monitoring session, the button click is getting registered correctly as a UserAction and the result is Success. Looking at the formula, it's showing exactly what I'd expect:

btnReset.OnSelect

UpdateContext({varShowResetWarning: true});

I'm stumped. Any ideas?

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Building Power Apps

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ronaldwalcott 3,847 Super User 2025 Season 2 on at

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Do you see this behaviour every time you exit the screen then go back into it. How are you setting the values to false? Show a complete example of how you have it configured.

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mmbr1606 14,605 Super User 2025 Season 2 on at

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hey

question:

do you remain on the same screen or navigate away and then come back to it? updatecontext is bound to a screen and is no global variable. did u try the same with Set() instead?

if my answer helped please mark as verified,

cheers

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ingrtodd 45 on at

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@ronaldwalcott Thanks for the reply. This behavior happens intermittently, but I mostly notice it when I edit the app the next day. If I change the visible property as described in my post, it works until the next day. Yet if I forget to fix it and just publish, it's broken until I fix and re-publish. I know it doesn't make any logical sense, that's why I'm perplexed.

In my app's OnStart, I set varShowResetWarning to false. On the reset dialog, there's another button to confirm you want to reset. I'm doing another UpdateContext there to set the variable to false to dismiss the reset dialog.

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ingrtodd 45 on at

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@mmbr1606 Thanks for your reply. This is a single screen app. I am not navigating away from the screen.

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ronaldwalcott 3,847 Super User 2025 Season 2 on at

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Since this is a one screen app. Are you restarting the app every time? Are you in development or production? OnStart will only run if you restart the app and run the published app or if you are still in development running OnStart manually. You should examine what condition and control can be used to reset your context variables if you are not exiting the app after use to reset the variables. Some of the variables are probably maintaining their previous values. How do you close the dialogs, don't you set the variables to false?

Show some of the code for the problematic buttons.

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ingrtodd 45 on at

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Changing all UpdateContext commands to Set appears to have resolved the problem.

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