unable to see data in visualization tab

[twh1]

I am trying to create a time series chart but not getting any data in visualization tab.

index="test_data" sourcetype="SAP:data"  | lookup PROC_DETAIL PROC_CODE OUTPUT PROC_CODE PROC_NAME PROC_PARA PROC_TYPE   | search SYS_NAME="*" PROC_TYPE=* PROC_PARA=*  PROC_CODE=10130 | timechart span=5m max(PROC_VALUE) as "Max Value"

I am getting data in statistics tab like below. But in visualization tab not showing any chart.

_time               Max Value
2019-07-06 05:15:00 2
2019-07-06 05:20:00 2
2019-07-06 05:25:00 2