function setEffect(p: player, e: potion effect type, t: integer, s: time span, h: boolean, a: boolean, c: colour) :: boolean:
    if {_p} is a player:
        if {_e} is a potion effect type:
            if {_t} is an integer:
                if {_s} is a time span:
                    if {_h} is a boolean:
                        if {_a} is a boolean:
                            if {effects::%{_p}%::%{_e}%} is not set:
                                set {effects::%{_p}%::%{_e}%} to now + {_s}
                            else:
                                if {effects::%{_p}%::%{_e}%} > now:
                                    set {_s} to {effects::%{_p}%::%{_e}%} - now
                            if (now + {_s}) < {effects::%{_p}%::%{_e}%}:
                                send "[DEBUG] The current effect lasts longer than specified!" to console
                                return false
                                stop
                            apply potion of {_e} of tier {_t} to {_p} for {_s} and ambient {_a} hide particle effects {_a} colour {_c}
                        else:
                            send "[DEBUG] %{_a}% is not a valid boolean!" to console
                            return false
                    else:
                        send "[DEBUG] %{_h}% is not a valid boolean!" to console
                        return false
                else:
                    send "[DEBUG] %{_s}% is not a valid time span!" to console
                    return false
            else:
                send "[DEBUG] %{_t}% is not a valid integer!" to console
                return false
        else:
            send "[DEBUG] %{_e}% is not a valid potion effect type!" to console
            return false
    else:
        send "[DEBUG] %{_p}% is not a valid player!" to console
        return false