Not able to get outlook Subject

Hello all.
I am using Get outlook mail messages followed by a for each activity to display the subject.
If i use filter property. code is not entering into for each activity ( it worked fine yesterday).
It works fine without filter property.
Filter code :"@SQL=urn:schemas:httpmail:subject like ‘SEW_PaymentList-" + now.ToString(“dd/MM/yyyy”)+ "%’"