The Currency_GetNegativeSymbol() function returns the string that is used as the negative symbol when the specified multiformat value is applied to a currency field.
Currency_GetNegativeSymbol(multiformat_value)
• multiformat_value – An integer value that was assigned to the currency format you are inquiring about.
String. If parentheses are used to denote negative values when the specified multiformat value is applied to a currency field, this function will not return parentheses. It will return the string defined as a negative symbol using the Currency_SetNegativeSymbol() function. If one wasn’t defined using that function, the operating system’s default negative string, most commonly a minus sign (-), will be returned.