So I have my flow below to automatic send a reminder 30 days out date:

I am using the formula addDays(utcNow(),30,'MM/dd/yyyy') to the variable.
But now, i want to change this number '30' to my 'Days to Notify' Sharepoint List column. In this column, people will type different number of days.
I tried several things but none of them worked. Any suggestion?
Many thanks!