Chart expression using multiple modifiers

[danaleota1]

I'd like to add multiple modifiers to my chart expression.  This is what I have currently

=Count({$< txtValidError = {'Yes'}>} txtCoachingErrorType)/Sum(ACDCALLS)

which is fine but when I try to add additional modifiers I get an error for example I tried- 

=Count({$< txtValidError = {'Yes'}> +$ <txtSegment <> {'eServices'}>}  txtCoachingErrorType)/Sum(ACDCALLS)

I want to return only the Count(txtCoachingErrorType) where txtValidError = 'Yes', txtSegment <> 'eServices',  txtCallInfoType <> 'Compliment' AND txtCallInfoType <> 'Complaint'  , then divide by sum(ACDCALLS).   I'm trying to do this as a chart expression and save as a master item.   Not sure what I'm missing thank you. 

[Lisa_P · Accepted solution]

This is a syntax issue.
Try this:
=Count({$< txtValidError = {Yes}, txtSegment =- {eServices}, txtCallInfoType =- {Compliment, Complaint} >} txtCoachingErrorType)/Sum(ACDCALLS)

[danaleota1]

Thank you!