RCM invoices in GSTR1

Dear All,

We are rending security services and we is to charge 18% before RCM. Now RCM has implemented so we do not charge GST. But we say RCM "yes" in invoice. 

Same I want to upload in GSTR1. How shall I upload?

Option -1

Tick yes to RCM and put taxable value at 0%, then file the return 

OR

Option-2

Tick yes to RCM and put taxable value under 18%, because actual rate of security charges is 18%.

Please  let me know which option I need to follow.