When I try define the rectangle to be exported by using Export_1, I got an error: "Please check your input: Export_1".I'm using GeoGebra 6.0.382.0-offline.
for 5.0.382 you can creat three points ie:A,B,C
then rename A as Export
rename B as Export
rename C as Export
for 6.0.382 double clic in algebra view over the point, left arrow several times, type Export_1 deleting old name
Thank you for this solution, it works in my case!
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