fix UT.

Author: Alberto-DM

_unittest/test_02_3D_modeler.py

@@ -69,7 +69,7 @@ def test_04_convert_to_selection(self):
     @pyaedt_unittest_check_desktop_error
     def test_05_split(self):
         box1 = self.aedtapp.modeler.create_box([-10, -10, -10], [20, 20, 20], "box_to_split")
-        assert self.aedtapp.modeler.split("box_to_split", 2)
+        assert self.aedtapp.modeler.split(box1.name, 2)
 
     @pyaedt_unittest_check_desktop_error
     def test_06_duplicate_and_mirror(self):