Hello,
I have managed to set the variable type to boolean as in the above image you sent. However, it is still showing me 1- True and 2 - False instead of 0/1.
I am plotting a bar graph.
The y-axis details are unique count(aggregation) -> timeout (boolean value obtained from logstash filter)(field)
X-axis - Date Histogram(aggregation) with syslog timestamp(field).