Hi @hugosmurfs ,
Is Qty one column in your SP list?
Could you please share more details of your SP list column?
And Could you please share more details of your controls in your gallery now?
What are the formula expressions of them?
Do you want to save to one field more than once?
You can use one textinput and one button control and then use patch function, you can also use form to achieve that.
Button.OnSelect:Patch(datasource, defaults(datasource),{ColumnName:Textinput.text})
More information:
function-patch
Hope this could be helpful.
Best Regards.
Yumia