Arrondir une variable dans un tooltip

Bonjour à tous,

J'ai ce tooltip:
Code:
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        Beta = BetaMin
        For Me.b = 0 To BetaStep Step 1
            Delta = DeltaMin
            For Me.d = 0 To DeltaStep Step 1
                YMDChart.Series("Beta " & Round(Beta, 2).ToString & "°").Points.AddXY(LatAccelGraph(b, d), YawMomGraph(b, d))
                YMDChart.Series("Beta " & Round(Beta, 2).ToString & "°").Color = Color.FromArgb(100 + CInt(155 * (b / BetaStep)), Color.Red)
                YMDChart.Series("Beta " & Round(Beta, 2).ToString & "°").ToolTip = "Lateral Acceleration= #VALXg" & vbNewLine & "Yaw Moment= #VALYN.m" _
              & vbNewLine & "Slip Angle LF= " & deg(SlipAngle_LF(b, d)).ToString & "deg" _
              & vbNewLine & "Slip Angle RF= " & deg(SlipAngle_RF(b, d)).ToString & "deg" _
              & vbNewLine & "Slip Angle LR= " & deg(SlipAngle_LR(b, d)).ToString & "deg" _
              & vbNewLine & "Slip Angle RR= " & deg(SlipAngle_RR(b, d)).ToString & "deg"
 
            Next
            Beta = Beta + BetaIncrement
        Next
Comment arrondir "#VALX"?