主题：请老师修改策略

input:inb(20,1,500,1),outb(10,1,500,1),risk(2,0,10,0.1); 
//和风版海龟源码 
variable:times=0,i=0,n=0; 
rn:=ema(ref(tr,1),20); 
n:=valuewhen(holding=0,rn); 
rh:=ref(h,1); 
rl:=ref(l,1); 
h1:hhv(rh,inb); 
h2:hhv(rh,outb),linedot; 
l1:llv(rl,inb); 
l2:llv(rl,outb),linedot; 
lotst:asset*risk*0.01/(n*2*multiplier),linethick0; 
lots:=if(risk=0,1,lotst); //如果risk取0，表示固定开1手 
tbc:=h＜＞l;//判断是否停板 
partline(holding＞0,enterprice-2*n); 
if barpos＜inb+1 then exit; 
if holding=0 and tbc then //不是停板才可以交易 
begin 
if h＞h1 then //开多 
begin 
buyp:=max(o,h1); 
buy(1,lots,limitr,buyp); 
times:=1; 
while h＞enterprice+n*0.5 and times＜4 do 
begin 
buyp:=max(o,enterprice+n*0.5); 
buy(1,lots,limitr,buyp); 
times:=times+1; 
end;//连续开仓 
end;//开多结束 
else if l＜l1 then //开空 
begin 
sellp:=min(o,l1); 
buyshort(1,lots,limitr,sellp); 
times:=1; 
while l＜enterprice-n*0.5 and times＜4 do 
begin 
sellp:=min(o,enterprice-n*0.5); 
buyshort(1,lots,limitr,sellp); 
times:=times+1; 
end;//连续开仓 
end; 
end;//holding=0

if holding＞0 and tbc then //已有多仓 
begin 
exitlongp:=max(enterprice-2*n,l2); 
if l＜exitlongp and enterbars＜＞0 then //出场 
begin 
exitp:=min(o,exitlongp); 
sell(1,0,limitr,exitp); 
times:=0; 
end;//出场 
else 
begin 
while h＞enterprice+n*0.5 and times＜4 do //开多 
begin 
buyp:=max(o,enterprice+n*0.5); 
buy(1,lots,limitr,buyp); 
times:=times+1; 
end;//连续开仓 
end;//else

if holding＜0 and tbc then //已有空仓 
begin 
exitlongp:=min(enterprice+2*n,h2); 
if h＞exitlongp and enterbars＜＞0 then //出场 
begin 
exitp:=max(o,exitlongp); 
sellshort(1,0,limitr,exitp); 
times:=0; 
end;//出场 
else 
begin 
while l＜enterprice-n*0.5 and times＜4 do //开多 
begin 
sellp:=min(o,enterprice-n*0.5); 
buyshort(1,lots,limitr,sellp); 
times:=times+1; 
end;//连续开仓 
end;//else 
end;//holding＜0 

请老师修改策略

1.改成股票策略只开多，平多。

2，如何控制开仓量? 如手数控制，或者总资金控制?谢谢。