Condition-section inside of repeating section in document template

Hi,
I’m using adobe generation for work (we have a subscription).
I have a word template that I’m using to generate documents?

I have here a template where I have a repeating section, and I would like inside that repeating section, to have a condition_section..

But right now, the conditional-section is just ignored and it displays all the items inside the repating section.
Can you help with that ?
Thank you 
Here the exemple : 
 

{% repeating-section parties.other_roles %}

{% conditional-section expr($.role = "co-tenant") %}

Sowie

{{salutation}} {{first_name}} {{last_name}},

geboren am {{birth_date_de}}

{{address_line}},

{{address_zip}} {{address_city}}

{% end-section %}

{% end-section %}