Default log level change not proper

[ManikandanChockaling]

I try to change the DLT_INITIAL_LOG_LEVEL = error in the environment variable . Then when i connect dlt-viewer and try to change default log level for the ECU, its not changing the log level to my desired log level.
But when i set the log level individually in dlt-viewer, then its getting changed.

Is there a way that i can control the default log level even with DLT_INITIAL_LOG_LEVEL configured in environment of user application?