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undefinedCheckox.value=true, .value is being underlined in red.

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Posted on by DaynaBee

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I am trying to disable a button if a checkbox is unchecked. But for some reason Checkox.value=true, .value is being underlined in red. I tried to reproduce, it works the first time and if I edit the formula it starts undying .value.

The other issue I have is that after navigating to another screen it does not clear the check box i tried on visible property of the screen but it is still check when i navigate back to it.

UpdateContext({Acknowledgment_2:false})

Thanks in advance,

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Building Power Apps

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WarrenBelz 156,117 Most Valuable Professional on at

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@Yemata ,

For the first one is Acknowledgement_2 the name of the checkbox? Try

If( Acknowledgement_2.Value=1, DisplayMode.Edit, DisplayMode.Disabled )

For the second, UpdateContext() sets a Variable, not a control. You just need to Reset it

Reset(Acknowledgement_2)

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DaynaBee 309 on at

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@WarrenBelz Thank you. I tried both for some reason it is not working. ☹️.

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WarrenBelz 156,117 Most Valuable Professional on at

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@Yemata ,

What is the name of your checkbox (not the field it contains) - you need to use that.

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DaynaBee 309 on at

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I am using the PowerApps Checkbox control, it is not a field from a list. And its name is "Acknowledgment_2".

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WarrenBelz 156,117 Most Valuable Professional on at

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@Yemata ,

Something else wrong here - a checkbox has only two possible values (true or false) that at times need to be referred to as 1 or 0. Also .Value is the correct reference to it. Try replacing it with another checkbox and see if that works.

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DaynaBee 309 on at

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Exactly, I have tried with new checkbox and new button multiple times. works the first time and it suddenly starts underlining it with red. 😟

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DaynaBee 309 on at

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@RandyHayes @Pstork1 @v-j @Anonymous Any idea on how to resolve this?

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Pstork1 69,601 Most Valuable Professional on at

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Since Power Apps is declarative it tends to be a problem to try to set properties on controls based on other controls. Instead do the following

Reset the checkbox in the screen OnVisible.

reset(Acknowledgement_2);set(disableButton,false)

Use the OnCheck and OnUncheck to set a variable to the status of the checkbox

Set(disableButton,true) Set(disableButton,false)

Set the displayMode of the button based on disableButton

If(disableButton,DisplayMode.Edit,DisplayMode.Disabled)

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DaynaBee 309 on at

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@Pstork1 Thank you. I tried it your way but it is still not working.

Only OnCheck is not throwing an error.

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Pstork1 69,601 Most Valuable Professional on at

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I agree with @WarrenBelz . I think you need to delete the toggle control and re-add it to the screen. The error you are getting is suggesting the Acknowledgement_2 control doesn't exist.

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