And operator issue

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Posted on by mtere

Hello everyone,

I´m new to Power App and I´m struggling with an operator.

In general I have two different screens. They are connected via buttons and the second screen has a form with several cards.

My goal is to make a specific card of the screen 2 visible when the button of the screen one is pressed AND a second button from the screen two is pressed.

I used this formula on ´Visibile´ section of the card:

And(varListSection="Button name from screen 1" , varListSection="Button name from screen 2", true)

The condition must be valid for both buttons; only if I press both the card will be visible.

So far I got no result, the card is not visible at all.

Thank you in advance for your help 🙂

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BCLS776 8,994 Moderator on at

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This will work better if you use some variables:

In the OnSelect property of Button 1 put:

UpdateContext({varButton1Pressed: !varButton1Pressed});

Similarly, in the OnSelect property of Button 2 put:

UpdateContext({varButton2Pressed: !varButton2Pressed});

Then, in the Visible property of the card put:

varButton1Pressed && varButton2Pressed

Hope that helps,

Bryan

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BCLS776 8,994 Moderator on at

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Note, the variables above will work if the buttons and card are all on the same screen. If not, use the Set() function to use a global variable, rather than UpdateContext()

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madlad 2,637 Moderator on at

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Hi! Buttons by themselves don't return any value. You can reference when they're selected using ButtonName.Pressed, but that only is true for a brief moment when you press them.
I suspect your best bet here, is to set a variable when each of these are pressed. Perhaps something like :

Set(*ThisButtonName*Pressed, true);

Then, for your And(), just try something like:

And(*Button1*Pressed, *Button2*Pressed)

Just make sure the variables match whatever you decide to set in your buttons OnSelects - each button will need a variable.(Here I dubbed them "Button1Pressed" and "Button2Pressed")

Hope this helps!

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mtere 42 on at

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Hello,
I used 'UpdateContext' and 'Set' and they both don´t work.
When I used UpdateContext I had the buttons on the same screen of the form.
Can you please explain what´s the purpose of these functions?
Thank you 🙂

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BCLS776 8,994 Moderator on at

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UpdateContext() creates/updates a context variable that is available to that screen only, while Set() creates/updates a global variable that is available throughout the app. Make sure you don't use the same variable name for global and context variables, or you'll end up with issues

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