They moved the post as I was grrr about to post
Get some sticks, straight as possible not chemically treated, they should be about the same width as your viv, which I am guessing is 60x60x120...
In the end of each stick drill a hole about 1-2cm from end and through that put the tie, then secure through screen with the ties, test them by pushing down on them firmly, they need to be able to support about 3kg, however I like wide margins so give them a good firm push.. make sure they are secure..
On one side place the Jasmine, on the floor, and on the other side place the Passion flower, these are both climbers, so you can bring them up to the mice upper basking spot you created with the sticks..
PS.. I use Bamboo, but slippery when wet, so does require some intricate intertwining with the climbers to provide a comfortable grip.
Intertwining with both plants is easy, but do not force any part of the plant to do things it dos not want to do, both plants have parts especially adapted ot cling on and these are malleable, however, again we have to check for structural integrity, so I recommend again using ties to support them and also "fake vine root" to run along the stems, eventualy these plants will be able to easily support your cham climbing up and down on them, but you need to be confident they are not going to fail, with these plants though apply minimum force to check they are not going to lose there grip.
Gradually the plant you have in the middle will grow up and provide even more excellent environment...
Scooby