I haven't been able to test this yet but I have a similar modification on my csgo server which will display a custom name for a map. I've never messed with setting strings through natives so I'm not 100% sure the GetMapName will work.
Example: de_dust2, de_castle, mg_custommap_v1_b5, surf_skill_revolution_v5rba93_2016 in the menu could be shown as:
I haven't been able to test this yet but I have a similar modification on my csgo server which will display a custom name for a map. I've never messed with setting strings through natives so I'm not 100% sure the GetMapName will work.
Example: de_dust2, de_castle, mg_custommap_v1_b5, surf_skill_revolution_v5rba93_2016 in the menu could be shown as: