Long search never refound the movie please help

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Good day,
Back in 2003~2004 I remember my parents watch this movie.
Haven’t been able to find it, I’ll do my best to describe it. Don’t remember to much tho.

Movie is set to normal day. English spoken movie.
A kid starts climbing a tree but because of a sickness or scared of hight (don’t know) he falls down.
Turns out he needs a new heart.

He climbed the tree because he saw a group of freerunners on the roofs.
Now the freerunners feel bad and start to steal money from rich people to pay for the boys new heart.

This is all I remember, and can’t seem to find it on Google or anywhere else.
Iknow it’s not a lot to go on. But have quite a bad memory

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