I have a question on dynamic header:

I am using below in my graph title and have defined a presentation variable = SUPPLIER on my prompts.

Count by Month  - @{SUPPLIER}

I also want to show just Count by Month when there is no prompt selected as default.

How do I incorporate IFNULL here.

I tried below and it didnt work:

Count by Month  - IFNULL(@{SUPPLIER}," " )

Any help is appreciated.

Thanks