Function Set () in Components

[Danilo-ES-BR]

Hi Guys,

I'm not able to use variables with the Set () function that were assigned within the components that are inserted in some screens. Does the Set () function not work within components ??

[mdevaney]

@Danilo-ES-BR 
You can use variables inside components.  But those SET variables should only be used inside the component and not referenced outside the component.  Create a new output property if you need the component to communicate something to the outside world.

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[v-xida-msft · Accepted solution]

Hi @Danilo-ES-BR ,

Could you please share a bit more about your scenario?

Do you want to reference the variable set within your Component within your app screen (outside the Component)?

Currently, within PowerApps, you could set up a global variable within the custom component. But the variable is scoped to component itself rather than whole canvas app.

Please check the following known limits with custom component in PowerApps:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/create-component#known-limitations

If you want to reference the global variable set up inside your custom component within your app screen (outside the Component), you consider add a Output property within your custom component, then bind the Output property with the global variable within your custom component.

After that, within your app screen, you could reference the global variable through the Output property of the custom component. I have made a test on my side, please take a try with the following workaround:

After that, you could reference the global variable within your app screen through the Component Output property. Within your app screen, you could use the following formula to reference the Output property of the custom component:

CustomComponentControlName.OutputProperty

More details about the custom properties in custom component, please check the following article:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/create-component#custom-properties

Best regards,