Create buy system for my currency

Unreal Engine Programming & Scripting
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#1

Screen Shot 2022-06-17 at 12.28.41 PM
Screen Shot 2022-06-17 at 12.28.41 PM1920×865 103 KB

Screen Shot 2022-06-17 at 2.24.11 PM
Screen Shot 2022-06-17 at 2.24.11 PM1005×1663 161 KB

Screen Shot 2022-06-17 at 2.25.51 PM
Screen Shot 2022-06-17 at 2.25.51 PM1920×1109 124 KB

My coins aka bottles can be picked up and are able to be saved. The only problem is that I dont know how to set up a system for buying things with the coins on a button clicked in the widget. Can anyone show me how to do it.