AddField( sDisp: String, sSource: String, sField: String; bHide: Boolean)

This adds a field definition to the SystemDataConfig object.

sDisp is the text to display in the System Data display as a field name.

sSource is the data source.

sField is the name of the custom field to use as the data source, if sSource is set to 'custom field'.

bHide specifies if the field should be displayed or hidden if the value for the field is empty or zero.