Hi @Thomas_Chu!
Let me first welcome you to our community! You can Introduce yourself 🙆 to everyone here if you feel like it 
As for your problem, @Reynold_Chan may be the best suited to help you out on GSA stuff.
Meanwhile, could you share with us the error you’re getting from the GSA node?
If you could also share the GH file it could speed things up 
Thanks for bringing this up! We’ll get back to you as soon as we have some news on this 