how to refresh symbol data - page 3

[William Roeder]

Dua Yong Rew:

I have a script to scan candlestick pattern on multiple symbols. When I run the script in the morning, it always gives me candlestick pattern the day before.

After I run it again, it gives me today's pattern. Seems that the first run did not download the symbols price data.

How do I force download all symbols data in script?

The first time you run and try to access another symbol/timeframe

1. Clear _LastError
2. Try to access
   
3. Check the error codes for 4066/4071 Then sleep for 5 seconds to let the terminal time to download new data, then retry.
   

[Dua Yong Rew]

Trinh Dat:
Maybe, but try to delete it from code above then you see problem.

I removed refreshrates and caught in a endless loop

[Dua Yong Rew]

whroeder1:

The first time you run and try to access another symbol/timeframe

1. Clear _LastError
2. Try to access
   
3. Check the error codes for 4066/4071 Then sleep for 5 seconds to let the terminal time to download new data, then retry.
   

I'm getting error 4066

But how do I use this get last error in my code? 

[William Roeder]

Dua Yong Rew: But how do I use this get last error in my code?	What part of "check, sleep, and retry" was unclear?