#* selecting the desired reference from the dialog appearing after double-clicking the cell<br/>[[File:IL_HowTo_CreateMetaProperty_AssignReference_01.png|220 px|alt=Assign a reference|Assign a reference]]
=== SELECTIVELIST: Assign a selective list ===Define 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.
# Locate an existing or create a new [[Selective List]]
#* selecting the desired list from the dialog appearing after double-clicking the cell<br/>[[File:IL_HowTo_CreateMetaProperty_AssignSelectiveList_01.png|220 px|alt=Assign a selective list|Assign a selective list]]
=== UNITITEM: Set a unit item ===
Set the [[UNITITEM|unit item]] of either by
* dragging and dropping the unit item object onto the cell
=== Validation flag ===
=== Number INDEXCOUNT ===Set the number of named index keys === INDEXKEYS === Enter the index keys as string separated by a comma, like "a,b,c,d" (INDEXCOUNT = 4). === Default values DEFAULTVALUE ===
Set up to 10 [[MetaProperty#Default_value|default value(s)]] for the MetaProperty.
=== Initial values INITIALVALUE ===
Set up to 10 [[MetaProperty#Initial_value|initial value(s)]] for the MetaProperty.
=== Category CATEGORY ===
If desired change the category of the MetaProperty to a value of the list. The property will then be moved to a new tab if the object is viewed in the [[View Test Environment]] or using the [[Object Editor]].
<br/>[[File:IL_HowTo_CreateMetaProperty_Category_01.png|220 px|alt=Change category|Change category]]
=== Enable validation feature NEEDSVALIDATION ===Check Enable [[Validation|validation]] by checking the ''NEEDSVALIDATION'' attribute of the MetaProperty to enable the [[Validation|validation]] feature of a property and let the system explicitely store a validation time stamp information in the database. This is particularly used on the mobile client in combination with the [[SYSCLS_TASK]] and [[SYSCLS_MEASUREMENTTASK]] classification.
=== Assign a Value Validation object VALUEVALIDATION === Set Assign a [[Value_Validation|value validation]] object to the ''VALUEVALIDATION'' attribute of the MetaProperty either by
* dragging and dropping the validation object onto the cell
* selecting the desired validation object from the dialog appearing after double-clicking the cell