Garmin and Microsoft streets and trips question

I have a Garmin 1350 nuvi lmt. I read that one can make a streets and trips map and install it in a garmin. I have tried but without success. Says that route installed successfully but can not find it. Have read that nuvi types are capable of this feature and some are not. I thought I had read that my type garmin was compatible with Microsofts streets and trips but for some reason I can not get the programs to work. thus, I assume that the Garmin I own is not compatible with the microsoft streets and trips program. Am I assuming correctly and if not what program should I use to make this happen.

look in [Please Register or Login to download file] :

[table="class: grid, width: 600"][TD="width: 300"]...
[TD="width: 300"]


Waypoints/favorites/locations
1000


Routes
0[/table]

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It doesn't support save routes, so that you can't copy any routes from external programs too.

Thank you. I kind of thought that after the many unsuccessful attempts I made to save a route.