Create a SCTask after completion of two tasks

[sri8]

I need to create a sctask after two sctasks,which will be generated by the closed completion of one after another. with the condition that sctask should be created whenever the user chooses variable type='Yes'. Need to write a business rule. not using workflow activity. 

TIA

[Mark Manders]

Create a flow with your conditions (or a subflow within an existing one). You can add a wait condition to only continue if both tasks are closed and then create a new one.