Displaying wrong currency symbol in column cell

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C#4.0

DataGridView

culture

Hi ,
Trying to add United States Dollar Symbol $ to a columns cell, but it returns the Euro symbol €?
BACKGROUND:
The program im building is currency converter where a user enters an amount in a numericUpdown and a combobox with all the worlds currencys. The amount entered is then multiplied by the value in the column cells. The new Value is then displayed in those cells with the correct symbol.

Note: i can add the $ doing this;

node.Cells[2].Value = "$ " + numVal * usa;

But i would like to use CultureInfo

What I have tried:

if (toolStripComboBox1.SelectedIndex >= 0)
{
   foreach (TreeGridNode node in myTGV.Rows)
    {
        
                       
        if (node.Cells[2].Value != null)
        {
            myTGV.Columns["Cost"].DefaultCellStyle.Format = String.Format("C", System.Globalization.CultureInfo.CreateSpecificCulture("en-US"));
            //string value = node.ToString();
            //node.Cells[2].InheritedStyle.Format = "#,###.##";

            int numVal = Convert.ToInt32(node.Cells[2].Value);

            float usa = (float)numCurrency.Value;
            //string value = numVal * usa;
            node.Cells[2].Value = numVal * usa;
        
        }



    }
                
}