Using "ThisItem" to gather a collection but want to add a column

[BKICK]

I'm currently using excel as a data source. To create my collection I used an add to cart button with the OnSelect formula: 

Collect(WCDCOrder, ThisItem); Navigate('WCDC Shopping Cart'); ScreenTransition.Cover

The issue I'm having is I have a drop down option for user's to select the quantity of the item needed. How can I get this column added to the collection?

*In the screenshot I'm using a gallery and my excel file as the data source. The one thing not included in the excel file is the drop down menu which I want to add to the collection. 

[eka24]

I suggest you insert the dropdown into the Gallery. With this whenever you click on the item on the gallery , ThisItem would also include the dropdown selection.

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[TheRobRush]

Something like this
Collect(WCDCOrder, {Item:ThisItem, QTY:QTYControl.Selected.Value})

[mdevaney]

@BKICK 

Using ADDCOLUMNS and a reference to the dropdown control should do the trick quite nicely.

Collect(WCDCOrder, AddColumn(ThisItem, "Quantity", Dropdown1.Selected.Value));

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[TheRobRush]

Yah, this is the much tidier option

[BKICK]

@mdevaney  This seemed like the most logical but it says "invalid argument type."

[BKICK]

@TheRobRush This one worked to get the quantity in the collection but everything else from the gallery was left off. Also it didn't transfer the data to the shopping cart gallery. 

[BKICK]

@eka24  The dropdown is included in the gallery but it's not being included in the ThisItem/Collection. 

[TheRobRush]

Yah try changing thisitem to thisitem.nameofplaceproductnameis
Ie)
ThisItem.Label4.Text or whatever

[mdevaney · Accepted solution]

@BKICK 

I tested this new code and it will work.  Make sure to replace the reference to the gallery and dropdown with your own control names.

Collect(WCDCOrder, AddColumns(Table(ThisItem), "Quantity", Gallery1.Selected.Dropdown1.Selected.Value))

The advantage is you can store the quantity in a new column alongside the original record values like this...

Field1	Field2	Field3	Field4	Field5	Quantity
some_value	some_value	some_value	some_value	some_value	2

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