wprkflow start conditions

[ASSY, SOSTHENE]

Hello workflow guys.
 
I want to use the workflow start conditions. I want to trigger a workflow
when a value
of  the field is modified
I know how to do it in Release 46 : TOOLs- Business Workflow  - Development
- Events- event Linkages - Workflow Start conditionsw
I don't know  how to do with SAP release 45B.
Help will be highly appreciated.
 
 
Mr. Sosthene Assy
African Development Bank
Tel : 20-20-53-03