斑竹帮我写个函数吧

dgh2236

斑竹我不会写函数看看以下内容怎么写
if(high>Close and high-Low>60  AND Low<Close)
         
{
if ((Close>Open And Close-Open<20 ) or (Open>Close And Open-Close<20))
             PlotString ("Bear","十字线",Low,Red);          
}