For a gem choice option, I’d suspect you could code it like this:
NARRATOR
Would you like to support me with a gem choice?
choice
< GEMS:5 >”Yes, 5 gems.” {
NARRATOR
Thank you for your support!
}
< GEMS:8 >”Yes, 8 gems.” {
NARRATOR
Thank you for your support!
}
< GEMS:12 >”Yes, 12 gems.” {
NARRATOR
Thank you for your support!
}
< GEMS:17 >”Yes, 17 gems.” {
NARRATOR
Thank you for your support!
}
< GEMS:22 >”Yes, 22 gems.” {
NARRATOR
Thank you for your support!
}
< GEMS:28 >”Yes, 28 gems.” {
NARRATOR
Thank you for your support!
}
< GEMS:35 >”Yes, 35 gems.” {
NARRATOR
Thank you for your support!
}
“None right now.” {
NARRATOR
That’s okay!
Thanks for reading!
}
But make sure you remove the space between all of the < > things because it wasn’t appearing correctly when I typed it here without the spaces 
(I haven’t tested this in my script, I simply typed it on my phone so just let me know if it doesn’t work)