[Tagging] fence with wall base

[Jérôme Seigneuret]

Hi,

How can I. edit a wall+fence with height details?

for exemple:
barrier=wall;fence
height=2
level=0

barrier:part:0=wall
barrier:part:0:height=0.50
barrier:part:0:material=masonry
<https://wiki.openstreetmap.org/w/index.php?title=Tag:material%3Dmasonry&action=edit&redlink=1>
barrier:part:1:fence
barrier:part:1:height=1.50
barrier:part:1:fence:type =chain_link

0 is base of the barrier same as building

My problem is parts are identical on 2D map so this is the same line. I
need key=value solution

Thanks for ideas and best practices
-- 
Cordialement,
Jérôme Seigneuret
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