Hi @ J_Hazel,
Could you please share a full screenshot of the configuration of your flow?
For your first question,you could choose the varible be a boolean/string/Interger type according to your requirement.
If you would like to get a “yes” or “no” type varible, you could choose the boolean type.
If you would like to get a such as “a” or “b” type varible, you could choose the string type.
If you would like to get a such as “0” or “1” type varible, you could choose the Interger type.
For your second question, the "Top account" field in the sharepoint "get items" action means the top output item value of the "get items" action.
However, the sharepoint "get items" action have a "5000" items limit,if the list has more than 5000 items, you could only get "5000" items from the "get items" action even though you have fill "10000" in the "Top account" field.
Please let me know if your problem could be solved.
Regards,
Alice Zhang