Button Code Help Please

What code would I use to make this button set the Location field to empty? The Location filed is a reference from table.

Screen Shot 2021-03-31 at 7.48.37 PM

- Alain_Fontaine
- 3 yrs ago
- Reported - view
One would think that writing the value "null" into the field would do the trick. Not so: to set a reference to empty, one must put the value "0" into the field.
- Mr_K
- 3 yrs ago
- Reported - view
OK, so what is the formula? Iv'e tried a bunch that don't work.
- John_Halls
- 3 yrs ago
- Reported - view
Location = 0

Regards

John
- John_Halls
- 3 yrs ago
- Reported - view
Sorry, thats Location:= 0
- Mr_K
- 3 yrs ago
- Reported - view
Thanks. That works.

Content aside