通达信如何在中实现均线指标变换

以下是大智慧的公式，实现切换日线和周线周期时，K线图的指标也跟着变化，在通达信中如何实现？
谢了

IF datatype=8 then begin
MA(C,13),colorred;
MA(C,34),colorgreen;
MA(C,55),colorblue;
{MA(C,89),DOTLINE;
MA(C,133),DOTLINE;}
DRAWTEXTREL(220,20,'日线:(13,34,55) '), colorbbffff;
end
if datatype=7 then begin
MA(c,3),colorred;
MA(C,8),colorgreen;
MA(C,18),colorblue;
MA(C,220),DOTLINE;
ma(c,18)-ref(ma(c,18),1),LINETHICK0;
DRAWICON(TIME=103000,LOW,11),ALIGN1;
DRAWTEXTREL(220,20,'60周期:(3,8,18,220) '), colorbbffff;
end

内容解答

第一种方法
N:=IF(PERIOD==4,3,IF(PERIOD==5,13,DRAWNULL));
M:=IF(PERIOD==4,8,IF(PERIOD==5,34,DRAWNULL));
K:=IF(PERIOD==4,18,IF(PERIOD==5,55,DRAWNULL));
Z:=IF(PERIOD==4,220,IF(PERIOD==5,0,DRAWNULL));
MA(C,