Prevent Dismount

So I made a rideable flying entity, but if I'm in the air and crouch, then I dismount. I want to prevent dismounting if the rideable has a velocity vector. I was able to make the if statement to check if the rideable has a velocity vector, but otherwise I'm stumped. 

The mcreator version is 2023.2 and the mc version is 1.19.2. 

Thanks in advance if you help.