Indicator AbsolutelyNoLagLwma with the timeframe selection option available in input parameters, alerting when the indicator changes its color:
input ENUM_TIMEFRAMES TimeFrame=PERIOD_H4; // The indicator chart period (timeframe)
For the indicator to operate, the AbsolutelyNoLagLwma.ex5 indicator must be added to the <terminal_data_directory>\MQL5\Indicators folder.
Fig.1. Indicator AbsolutelyNoLagLwma_HTF