I am trying to determine the properties of a chart object that can be used in a macro to define the static scale values (min,max,step) for the expressions axis. I looked through the APIGuide without success. I am building the chart via a macro based on a list of expressions that the user selects, so when the chart is rebuilt, I lose the static scale values, hence why I would like to reset the values programmatically. I'm guessing either something similar to chart.ChartProperties.[scaleproperty???] or below the chart.ChartProperties.Expressions.???? object. Any help would be appreciated . Thanks, Pete