Hey we are using bosun version 0.5.0-rc2.
Want to try out series operations so have created an expression as follows:

$a = q("sum:metric_name{filters...}", "7h", "")
$b = q("sum:metric_name{filters...}", "7h", "")
$a/$b

above expression gives the error
expr: parse: type error in q("sum:filter{filters...}", "7h", "") / q("sum:filter{filters...}", "7h", ""): at least one side must be a number

Was trying this out after seeing doc.
Series Operations If you combine two seriesSets with an operator (i.e. q(..) + q(..)), then operations are applied
for each point in the series if there is a corresponding datapoint on the right hand side (RH). A corresponding datapoint is one which has the same timestamp (and normal group subset rules apply). If there is no corresponding datapoint on the left side, then the datapoint is dropped. This is a new feature as of 0.5.0.

Are we doing something wrong here ?
Please help. Thanks.

p.s. have not put actual metrics.

Hey used latest code and it works. thanks a ton