主题：图表改后台

请问下述图表,可以改后台吗?

variable:sumwealth=0;

variable:zichan=0;
ma10:=ma(c,5);
ma25:=ma(c,25);
sxf:=0.21/100;//手续费0.21%

手数:=max(0,floor((zichan-ref(zichan,barslast(date=1160315)))/360000));
if holding>0 and ma10<ma25 then begin
 sell(1,holding,thisclose);
 sumwealth:=sumwealth+holding*c*300*(1-sxf);//卖出时减去交易额
end
if holding<0 and ma10>ma25 then begin
 sellshort(1,holding,thisclose);
 sumwealth:=sumwealth-holding*c*300*(1+sxf);//买入时加上交易额
end
if holding=0 and ma10>ma25 and 手数>0 then begin
 buy(1,手数,thisclose);
 sumwealth:=sumwealth-手数*c*300*(1+sxf);
end
if holding=0 and ma10<ma25 and 手数>0 then begin
 buyshort(1,手数,thisclose);
 sumwealth:=sumwealth+手数*c*300*(1-sxf);
end

zichan:=sumwealth+holding*c*300-abs(holding)*c*300*sxf;