about monitor multi currency and multi indicators data problem

 
I want to monitor the data indicators of multi currency and multi cycle. How to ensure the integrity of the data of multi cycle indicators? If I only run EA on one currency
 

On MT4: Unless the current chart is that specific symbol(s)/TF(s) referenced, you must handle 4066/4073 errors before accessing candle/indicator values.
          Download history in MQL4 EA - MQL4 programming forum - Page 3 #26.4 (2019)

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