The gas door will not stay closed. How can this be fixed? on 1999 Suzuki Grand Vitara

The gas door will not stay closed.

2 answers
buy a new latch kit from dealer
U could spray wd-40 on that the inside were the thing pops out to hold it shut,and keep working lever until it comes out again.
If there no action , its probably the cable,
.
Duct tape??