Line charts - dynamically changing line style for future dates

Migrateduser

<p>Hi,</p>
<p>I am using Actuate BIRT Designer Professional v 4.2.3.</p>
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<p>I have a line chart with a solid line. I wish to dynamically change the line style to dotted line for future dates, whilst still plotting the solid line for past dates in the same series.</p>
<p> </p>
<p>How might I be able to do this ?</p>
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<p>Many thanks</p>