Filter on age in expression

[MJansen]

Hi,

I want to filter on age in an expression. At some point it doesn't work and I can't find the problem. It doesn't seem very difficult. Hopefully you can find the sollution.

Here the expression, the problem in bold.
I want to filter on all the people >= 18 jaar 'leeftijd=age'
With this filter my output is 0. 

count({<[Verificatie omschrijving]={'MEDICATIEVERIFICATIE ONTSLAG'}, [Bestemming Omschrijving]-={'Eigen ziekenhuis'},[Verificatie indicatie]={'1'},[Verificatie type]={'Ontslag'},[Leeftijd bij ontslag]={'>=18'}>} [Verificatie indicatie])

[BrunPierre · Accepted solution]

Hi, for evaluated values try with double quotes.

[Leeftijd bij ontslag]={">=18"}

[MJansen]

Thank you very much!