[i4w_set videostartdifference=”[i4w_datediff todate='{:webinarstarttime:}’ format=’U’]”]
[i4w_compare value1=”{:videostartdifference:}” cmp=’LT’ value2=”0″]
<{!i4w_set videostart="[i4w_exec]echo abs({:videostartdifference:});[/i4w_exec]"!}>
Here
[ELSE_compare]
<{!i4w_set videostart="0"!}>
[/i4w_compare]
The absolute value of {:videostartdifference:} is: {:videostart:}