== Optional Attributes ==
[[File:IL_HowTo_CreateMetaProperty_AssignReference_01.png|thumb|alt=Assign a reference|Assign a reference]]
=== REFERENCE ===
[[File:IL_HowTo_CreateMetaProperty_AssignReference_01.png|thumb|alt=Assign a reference|Assign a reference]]
Assign a reference if the value of the property should link to an {{UBIK}} object. The data type of the MetaProperty has to be ''Guid'' that the data (guid) can hold a reference to an {{UBIK}} object.
#* selecting the desired reference from the dialog appearing after double-clicking the cell
=== SELECTIVELIST ===
[[File:IL_HowTo_CreateMetaProperty_AssignSelectiveList_01.png|thumb|alt=Assign a selective list|Assign a selective list]]
=== SELECTIVELIST ===
Assign a selective list to a property, if the respective column should display a Combobox with all items of the list instead of the value field. The value can then only be selected from the list, but not be edited manually anymore.
#* selecting the desired list from the dialog appearing after double-clicking the cell
[[File:IL_HowTo_CreateMetaProperty_UnitItem_01.png|thumb|alt=Set a unit item|Set a unit item]]
=== UNITITEM ===
[[File:IL_HowTo_CreateMetaProperty_UnitItem_01.png|thumb|alt=Set a unit item|Set a unit item]]
Set the [[UNITITEM|unit item]] of either by
* dragging and dropping the unit item object onto the cell