Export Dialog Custom File Name field is preventing the use of Xporter's Mappings

Description

Export Dialog Custom File Name field is preventing the use of Xporter's Mappings.

Exporting Documentation mentiones we can make use of Xporter's Mappings in the Custom File Name option when exporting reports. However, currently the export window is preventing it.

This is happening in all the export options. **

Actual result/Attachments

The Output File Name has a conditional that prevents the use of the Mapping special  characters.

Expected result

The Output File Name conditional should allow the use of the Mapping special characters.