counter +1 based on a sharepoint list

[superblueee]

Hello everyone!

I've created a Sharepoint list to update a counter as shown below:

Than i've connected this on Powerapp; second, i've add a button in the browsegallery:
 
How can I set that if I click on the button above "first slot", the counter incrase by +1?

Thanks!!!

[JR-BejeweledOne]

Here is what I would do.

On AppStart set a variable for these fields like this:  

Set(Slots,
   {
     Slot1: 0,
     Slot2: 0,
     Slot3: 0
   }
)

Set your label or text input text property like this:

Slot.Slot1 or Slot.Slot2 etc.

Then in the button OnSelect:  Set(Slot.Slot1, Slot.Slot1 + 1)

[JR-BejeweledOne]

If your slots are connected directly to SharePoint, you will have to patch or collect the data directly.

Something like this:

Collect(datasource, record, ColumnName: Value(control.text + 1))

[superblueee]

Thanks for your attention; yes slots are connected directly to SharePoint.
I've tried to insert in the the "onselect" field of the button this formula:

Collect([@app]; record; ThisItem.'counter': Value(control.text + 1))

obviusly i'm missing something: what i have to write instade of "record"? and have I to write something else instade of what?

[JR-BejeweledOne]

Actually what you could do that might work better is this:   UpdateIf(DataSource, Titolo = "First Slot", Counter + 1)

This is assuming that your counter column is a number column and not text.

[superblueee]

 Nope it doesn't work. It says

the "UpdateIf" function has no valid arguments

[JR-BejeweledOne]

What is your data source name?

[superblueee]

Its a sharepoint list called "app"

[JR-BejeweledOne]

Change the formula I gave you like this:   UpdateIf(App; Titolo = "First Slot"; {Counter: Counter + 1})

Addressing your data source like this [@app] can cause issues.

[superblueee]

Not yet

UpdateIf([@App]; Titolo = "First Slot"; {Counter: Counter + 1})

It's still saying the "UpdateIf" function has no valid arguments