Do you want to place a Chart objects (OBJ_CHART) on the chart and use it as conventional chart? It's possible. The only thing you need is the handle of OBJ_CHART object. Using the Chart Operations you may add and delete indicators (ChartIndicatorAdd() and ChartIndicatorDe...
from https://tradingrobots.net/ea_objprop_chart_id-expert-advisor-for-metatrader-5/