Why the spring opening node return null ?!

[mostafa_ahly7]

[sovitek]

Do you have dynamoironpython package 2.7 ver 2.5 installed? And probably Connect the create floor node into host input

[mostafa_ahly7]

i’m sorry but can you explain more ?!

[sovitek]

i can try…install that package i mention from package manager if you dont have it…another thing if i remember is that node expect curves and not polycurves…