public PropertyValue SUBPROJECT_NUMBER {get; set;}

public:
property PropertyValue^ SUBPROJECT_NUMBER {
   PropertyValue^ get();
   void set (    PropertyValue^ value);
}

Property Value

Number of the subproject. During the creation of subprojects a name is assigned automatically to each subproject. This is made up of the name of the original project and the subproject number. The subproject numbers are assigned in accordance with the order of defined working sections.

Reference

Placement3DPropertyList Class
Placement3DPropertyList Members
Overload List