The trend line consists of two prices at two times， "ObjectGetDouble " Can get the first time,How to get the second one？

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The trend line consists of two prices at two times，

"ObjectGetDouble() " Can get the first price,How to get the second one？

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universework: The trend line consists of two prices at two times，"ObjectGetDouble() " Can get the first price,How to get the second one？

double  ObjectGetDouble(
   long                            chart_id,          // chart identifier
   string                          name,              // object name
   ENUM_OBJECT_PROPERTY_DOUBLE     prop_id,           // property identifier
   int                             prop_modifier=0    // property modifier, if required
   );

ObjectSetDouble

OBJPROP_PRICE

Price coordinate

double    modifier=number of anchor point