Error in set modifier expression

[Ezther1997]

Can somebody help me solve this error:

count({<[Actual Door Arrival] = {'0'} and <[Actual Invoice] -= {'0'}>} distinct[Sales Document])

"Error in set modifier expression"

I want to count the distinct Sales Documents that do not have an Actual Door Arrival date but do have an Actual Invoice date.

[Chanty4u]

try this expression

count({<[Actual Door Arrival] = {'0'} and [Actual Invoice] -= {'0'}>} distinct [Sales Document])

[Ezther1997]

This gives me the same error

[hic · Accepted solution]

use a comma , instead of the "and"

[Ezther1997]

Thank you for the help!