Poke

function onStepIn(cid, item, pos)

    local pokes = {"Pikachu", "Caterpie", "Kakuna", "Chikorita", "Onix", "Geodude"}

    for i = 0, 1 do
        doCreateMonster(pokes[math.random(1, #pokes)], getCreaturePosition(cid))
    end
        return true
    end