Precent spent revenue is not populating any revenue

am trying to generate revenue based on a revenue method percent spent but its not generating any transactions

steps done :

project created

task created

budget added and baselined

actual costs created , accounted and posted to GL using a Task and Expenditure type that already in the budget

update project performance is done

created a customer contract

added revenue plan ( Percent spent )

Associated the contract line with the Task that had a baselined budget and Actual costs

contract activated

Generate revenue

no revenue generated because no actual costs is found

note:

as mentioned before i do have a baselined budget and i do have an actual cost for the associated Task