modeler automation and sysml (PTC integrity modeler)

well i am trying to make a program to automatly create some syml diagram using the previous ones and some user's input

curently i have a document that explain a bit how to use the scripts but there are still thinks i do not manage to do

In particular, i have no idea how to create sysml componants (such as block definition diagram) when i try to use flooder.addItem("BlockDefinitionDiagram","MyItem"), it return an error and the only way i found to avoid this problem is to copy a pre-made block diagram which is quite unpractical

same problem while creating a new model, i don't know how to automatly add the sysml profile

so if you have the solution or you have any documentation about this topic please tell me