Add to an array to produce 2 lines on a chart

Hi am having difficulty, I want a payload that produces 2 lines on a chart here's my existing array


and I want to add say {"name":'DZ',"points":[{"00:00":25},{"23:59":25}]}; I don't necessarily need "name":'DZ',"points":
so the array to add could just be [{"00:00":25},{"23:59":25}] part.

I tried
but that gave me like an inverted Z what I want is 2 separate parallel lines, any help would be appreciated

Details of the required format for this is described in the section 'Line Charts' in