Thanks for your quick reply
I tested this expression against --> LeadLag(100,101+102@103,104)
it is allowing number after first ',' and before '@'
i.e. 101 and 102
Our string only contains + or - and then @ after first ','
for e.g --> ',+@103' OR ',-@103'
Could you please modify the expression accordingly?
Please let me know if you need any more information?