Trying to Prepopulate data in Chat Inlay

Summary

I am trying to prepopulate data in my chat inlay. It is accepting my JSON string, but appears to be erroring with further java that i don't have visibility to . can you provide a working chat inlay

Content

<inlay-oracle-chat-embedded id="chatInlay" class="inlay" is-triggered=false site-url="xxxx.fa.us2.oraclecloud.com" site-type="ec"
           launch-form-fields='[{ "SUBJECT":"","FIRST_NAME":"","LAST_NAME":"" }]' ></inlay-oracle-chat-embedded>
          <script id="oit-loader" src="http://static-xx.custhelp.com/s/oit/latest/common/v0/libs/oit/loader.js&quot; data-oit-increment="true" data-oit-group="" async></script>

 

 

Code Snippet

<inlay-oracle-chat-embedded id="chatInlay" class="inlay" is-triggered=false site-url="xxxx.fa.us2.oraclecloud.com" site-type="ec"
           launch-form-fields='[{ "SUBJECT":"","FIRST_NAME":"","LAST_NAME":"" }]' ></inlay-oracle-chat-embedded>
          <script id="oit-loader" src="http://static-xx.custhelp.com/s/oit/latest/common/v0/libs/oit/loader.js" data-oit-increment="true" data-oit-group="" async></script>