Hi, i think u've to use AddCurrentRange Method method. U'll find more info on CrystalDevHelp.chm on u're crystal report installation directory :
AddCurrentRange Method (ParameterFieldDefinition Object)
The AddCurrentRange method adds the current parameter range to the specified parameter field of a report. When this method is used, property DiscreteOrRangeKind must be crRangeValue.
Syntax
Sub AddCurrentRange (start, end, rangeInfo As CRRangeInfo)
Parameters
Parameter Description
start
Sets start of the value range.
end
Sets end of the value range.
rangeInfo
CRRangeInfo. Use this bitwise value to indicate whether the upper and/or lower bound of the range should be included.