created an attachment (id=160572)
screenshot

description:
press enter does not work for live preview when specify value series using expression.

build number:
2.6.0.v20100302-0630

steps to reproduce:
1. new a chart, binding to the data set.
2. specify category(x) serires "row["contactfirstname"]" and value (y) series "row["creditlimit"]".
3. change "row["creditlimit"]" to "row["creditlimit"]/1000" and press enter.

expected result:
live preview changed.

actual result:
live preview does not change.

error log:
n/a
fixed.
verified in build (2.6.0.v20100308-0630), closed.
need to backport to 2.5.3
also fixed in 2.5.3.