XPRBvarMultiply(XPRBvar, XPRBvar) Operator

public static XPRBexpr operator *(
	XPRBvar v1,
	XPRBvar v2
)

Public Shared Operator * ( 
	v1 As XPRBvar,
	v2 As XPRBvar
) As XPRBexpr

XPRBvar var = new XPRBvar("Variable1");
XPRBvar var2 = new XPRBvar("Variable2");
XPRBexpr exp;
...
exp = var*var2;