Trigger Coil via ModbusRTUCOM

[Jie]

Hi,

I trying to set a condition when user select any combobox contents ,
VB will automatically trigger a coil in Panasonic FP0R PLC to reset a counter.
By using selectorswich,
the address specified works.
However if i am using ModbusRTUCom2.Write(002049, 0)

The below Exception error came out :
MfgControl.AdvancedHMI.Drivers.Common.PLCDriverException: 'Invalid Address 2049 - Invalid first digit in Address'

Can you advise?

[Godra]

Use quotation marks - ("002049", "0") since the Write function is defined as (String, String).