How to delete specific hologram

[Das3tins]

anyone know how to make a perm hologram, plus i can delete it? with this code,

on place of a redstone block:
    if player's tool is redstone block named "&6Bitcoin &cMiner &7(Tier 1)" with lore "&7Gives you bitcoins when placed":
        add location of event-block to {miners::*}
        add location of event-block to {minersplaced.%player%::*}
        add 1 to {minersplaced.tier1.%player%}
        set {_localtemp} to location of event-block
        create a new holo with lines "&6Bitcoin &cMiner" and "&7Right-click to open" 1 block above {_localtemp}
        message "{@b} &6Bitcoin &cMiner &aplaced!"

it delete it idk why
[doublepost=1590077479,1590077263][/doublepost]So basically, I’m making a bitcoin project and I want it so that when a bitcoin miner is placed, it creates a hologram plus I am making it so that they can remove their miner but it deletes all holograms if i do it this way

create a new holo with lines “&6Bitcoin &cMiner” and “&7Miner” 1 block above {_localtemp} and store in {minersholo.%player%}

it delete all holos of all bitcoin miners please help I want it so that it deletes the only one
[doublepost=1590217541][/doublepost]Can anyone help? or this is impossible in skript????