Used to respond to changes in fields and controls, with the restrictions noted under Comments, below.


Name Type Description
fieldName String The name of the field to find.
callback Function The function to be invoked when the field or control changes.

Return Value

Result Value


This example registers a named function to be called on change:

function customChangeCallback()
    var itemType = GetFieldValue( "Item Type" );
    if ( itemType == "Defect" )
         EnableField( "Steps To Reproduce " );
         DisableField( "Requested Changes" );
         DisableField( "Steps To Reproduce" );
         EnableField( "Requested Changes" );
AddChangeCallback("Item Type", customChangeCallback );


Callbacks are invoked in the order in which they are added. Note the following restrictions:

Field/Control Type Field Style Notes
Binary/Trinary Radio buttons Use AddRadioCallback instead.
Single Selection, Single Relational, User Allow searching Not supported.
Multi-Selection, Multi-Relational, Multi-User, Multi-Group Allow searching

Before this method can be invoked to populate a searchable Multi-Group, Multi-Relational, Multi-Selection, or Multi-User field, values must be present in the left-hand box on the ListBox control.

Multi-Selection, Multi-Relational, Multi-User, Multi-Group This method is not invoked for these field types when a user simply double-clicks a value or uses the right-hand arrow to move a value from the left-hand box on a ListBox control to the right-hand box. For the method to be invoked, the user must also click the values in the right-hand box to select them.
Text field, EditBox control This method is invoked only after the user changes the value and moves focus out of the field or control.