Validating a page list size using the Validate rule
I have a read-only grid which gets populated by external source. On reviewing the contents, user makes a decision to move the process forward. Incase if the user tries to move the process forward with the empty grid, screen should show an error message. Basically I would like to have to a validate rule in the flowaction to evaluate the size of the page list sourcing the grid. Validate rule is not supporting this somehow.
My pagelist property name is Products and i have tried entering Products().ProductName and tried the sizeOfPropertyList by selected the 'expression evaluates to true' option.It dint work.
Is there any better way to validate the page list size when user tries to moves out of the screen with the empty grid?
***Updated by moderator: Lochan to update Categories***