In Room Editor>Areas select the hotspot and click on the "Interaction..." button.
Rt-click "Use inventory on hotspot" and choose "New action".
From the dropdown menu at the top of the dialog box that appears choose "Conditional - If inventory item was used", then use the "Change" button to set Value to be the item number. "OK".
Now there's a "Do Nothing" script under the Conditional.
Rt-click again, and choose what you want to do.
If nothing on the list is suitable, then (and only then)will you have to choose "Run script", which will show a blank page ready for scripting.
Rt-click "Use inventory on hotspot" and choose "New action".
From the dropdown menu at the top of the dialog box that appears choose "Conditional - If inventory item was used", then use the "Change" button to set Value to be the item number. "OK".
Now there's a "Do Nothing" script under the Conditional.
Rt-click again, and choose what you want to do.
If nothing on the list is suitable, then (and only then)will you have to choose "Run script", which will show a blank page ready for scripting.