Actually that isn't complete. This would show 1234.56 as 1.234.56 when it is expected to see 1.234,56
Add an extra 2 lines to fix it.
| eval count=tostring(count,"commas")
| rex field=count mode=sed "s/\./#/g"
| rex field=count mode=sed "s/,/./g"
| rex field=count mode=sed "s/#/,/g"
make it into a macro if you need it a lot.
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