Pine script Ak趋势买卖策略代码错误

我想对这些代码制定一个策略。但我想当情节是白色的，进入长期战略。当图为红色时，输入短策略

我无法将代码编写为买卖策略的正确内容

你能帮我吗

*//@version=4

strategy("Trend Yakala",overlay=true)

input1 = 3, input2 = 8 , 

fastmaa = ema(close,input1)

fastmab = ema(close,input2)

bspread = (fastmaa-fastmab)*1.001

m = bspread > 0 ? color.white : color.red

plot(bspread, color = m)

longCondition =
 
if (longCondition)= help meeeee

    strategy.entry("Buy", strategy.long)

shortCondition = 

if (shortCondition)= help meeee

    strategy.entry("Sell", strategy.short)