Step 2 - [QB-Core] Changes

Adding SetPhoneNumber function to qb-core/server/player.lua...

To make everything work with QB-Core you have to add some code to qb-menu.

Add "TriggerEvent("gp_taxSystem:closeMenu")" like shown below

qb-menu/client/main.lua

local function closeMenu()
    sendData = nil
    headerShown = false
    TriggerEvent("gp_taxSystem:closeMenu")
    SetNuiFocus(false)
    SendNUIMessage({
        action = 'CLOSE_MENU'
    })
end

qb-menu/client/main.lua

RegisterNUICallback('closeMenu', function(_, cb)
    headerShown = false
    sendData = nil
    SetNuiFocus(false)
    TriggerEvent("gp_taxSystem:closeMenu")
    cb('ok')
end)