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One way of achieving this would be to compute the aggregate value (maxValue in your case) outside the call to setProperty() and then round the result before you use setProperty: // condition you want the aggregate of $condition = ($t > 100).removeLongerThan(1d) // output the maxValue as a signal that we can then round easily $maxPerCapsule = $t.aggregate(maxValue(), $condition, startKey()) .round(2) // round to two decimal places // use the rounded maxValue to set the property in the condition $condition.setProperty('Max Value', $maxPerCapsule, startValue()) This results in the aggregates getting computed with the original data and then rounded: