MA'S function

//@version=4
study("Simple 17 Indicator BF", overlay=true)

///////////// Moving Average /////////////
source = input(title="MA Source", defval=ohlc4)
maType = input(title="MA Type", defval="sma", options=["sma", "ema", "swma", "wma", "vwma", "rma"])
length = input(title="MA Length", defval=17)

///////////// Get MA Function by bennef /////////////
getMAType(maType, sourceType, maLen) =>
    res = sma(close, 1)

	if maType == "ema"
        res := ema(sourceType, maLen)
 	if maType == "sma"
        res := sma(sourceType, maLen)
	if maType == "swma"
        res := swma(sourceType)
	if maType == "wma"
        res := wma(sourceType, maLen)
	if maType == "vwma"
        res := vwma(sourceType, maLen)
	if maType == "rma"
        res := rma(sourceType, maLen)
	res

MA = getMAType(maType, source, length)