Create MText

hi
if you use civil 2023 check
from

                #
                bt = t.GetObject(db.BlockTableId, OpenMode.ForWrite)
                ms = t.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite)

with

 bt = t.GetObject(db.BlockTableId, OpenMode.ForWrite)
            btrID = bt.get_Item("*Model_Space")
            btr = t.GetObject(btrID, OpenMode.ForWrite)

and
you have points dynamo or point3d