Checkbox to remember data

Dear Forum members,

Recently I got this working piece of VBA code from this forum that remembers the data that a user has typed in the inputboxes on a userform so when the next userform opens the user doesn't have to type all information again.
This works great and is very usefull but I want to make a small change to this.
I made a checkbox in the userforms and now I want the data to be remembered only when the user has selected this checkbox
If the checkbox is not selected the data should not be remembered.
I tired to place the checkbox = true code on several places but it's just not working....
Can someone help me out
This is the working code that remembers the user's input

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How and where should I add the code so the data is only remembered when checkbox1 is selected ??

After testing a lot and tried many options with the code, I was able to find the solution
Below is how I fixed it.

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