How would I Titlecase or Capitalize array data on a page? Using normal formatting options causes a disappearing act

Hey all,

I have data I am displaying on my page, by referencing the number in the array, e.g.

{{_source.experience[0].title.name+' - '+_source.experience[0].company.name+' ('+_source.experience[0].start_date.formatDate('MMM yyyy')+' - '+_source.experience[0].end_date.formatDate('MMM yyyy')+')'}}

What’s odd, is the formatDate works fine, but when I try to titlecase or capitalize the title.name or company.name - the code exists but when I try to render the data in the browser - the line with the titlecase or capitalize formula dissappears.

Assuming I’m just doing something wrong - so any guidance appreciated.