setText

--This function is executed when the player clicks on the block
local function clickblock(event)
    local playerid=event.eventobjid--Click on the player's mini number of the block
    local uiid="6986982063319417057"--Interface ID
    local elementid="6986982063319417057_1"--Text element id
    local text="Hello"-- The text content to be set
    --Set the display of the player's text symbols
    Customui:setText(playerid, uiid, elementid, text)
end
ScriptSupportEvent:registerEvent([=[Player.ClickBlock]=], clickblock)