Sets the 0% date of the trend via a keypad form. This allows the user to view trend information up to the date entered.
Syntax
CSV_Trend_SetDate(hTrendAN,sValue)
#hTrendAN:
Animation point number of the trend.
#sValue:
The date to set the 0% trend date to. If sValue = "", a form is displayed for the user to select a date.
Return Value
New date (as string).