thisitem in Gallery issues while working with collections

[u4jaanus]

Hi All,

I am working on an app where I have a product list stored in SP containing 2 columns. Code and Name.

I have pulled data into Gallery and added 1 more Custom Field name for Qty.

I have added a checkbox on Gallery item to let people choose the product they want.

OnCheck property of Checkbox I am creating a collection which have Code, Name and Qty in it which is then is pulled in Data table on my ordering page with other customer details. I have given a button to add/edit the quantity which takes user back to product page with check box and qty text field. There I have tried to add update function on ONCHANGE of Qty text field to update the collection but having errors. Most approaches I have used are giving evaluation error "formula uses scope which is not presently supported for evaluation".

Flow of the application is as below.

 Open Ordering Form > Choose Add/Edit products > Check the Checkbox for products to order > OnCheck create Collection to add selected item into collection & create another collection to compare Auto Hide function for Qty text field. i.e. if thisitem is in collection show Qty Field, if not Hide Qty Field.. > if user wants to change Qty, Onchange event update new Qty in collection. (problem underdiscussion)

Please advise.

Thank you.

[u4jaanus · Accepted solution]

Found the answer.

We would need to find the record against which an update is needed. Using Filter option.

Which should look like below.

Patch(Source,First(Filter(Source,ColumnToFindValueIn= ThisItem.ColumnToMatchValueOf)),{ColumnNameToUpdateValueIn:TextInPutField.Text})