OpenStaad VB.net array question

Hello, as far as i know openstaad commands are for VBA , im also trying to work it under VB.net, most of it working fine but only array filler commands doesnt . What i mean is;

Dim EndForces(5) As Double

objOpenSTAAD.GetMemberEndForces MemberNumber, 0, 1, EndForces(0)

for example getmember forces command above normally works on VBA  but it doesnt fill the endforces array on VB.net, What kind of definition must be used in VB.net???

Thanks