Hi, I want to use the Interceptors properties to modify our input messages before sending to open ai api. But I don't know how to do this in vue2 with js although I saw the demo video which is applied in angular.

<deep-chat
              id = "chatElement"
              style="border-radius: 10px; border-color: #dcdcdc; background-color: #f3f6fc; width: 70vh; height: 78dvh; "
              v-bind:requestInterceptor="requestIntercept"
              textInput='{
                "styles": {
                  "container": {"borderRadius": "20px", "border": "1px solid #969696", "boxShadow": "unset", "width": "78%", "marginLeft": "-15px"},
                  "text": {"padding": "10px", "paddingLeft": "15px", "paddingRight": "34px"}
                },
                "placeholder": {"text": "Enter a prompt here", "style": {"color": "#bcbcbc"}}
              }'
              introMessage='{"text": "Hi I am your stock expert, ask me anything!"}'
              directConnection='{
                "openAI": {
                  "key": "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",
                  "chat": {"max_tokens": 2000, "system_prompt": "You are a stock expert. Please answer my question professionally.","model":"gpt-4o"}
                }
              }'
              messageStyles='{
                "default": {
                  "shared": {"bubble": {"maxWidth": "100%", "backgroundColor": "unset", "marginTop": "10px", "marginBottom": "10px"}},
                  "user": {"bubble": {"marginLeft": "0px", "color": "black"}},
                  "ai": {"innerContainer": {"borderRadius": "15px", "backgroundColor": "white"}}
                }
              }'
              avatars='{
                "default": {
                  "styles": {"position": "left", "container": {"marginLeft": "12px", "marginRight": "5px"}}
                },
                "ai": { "styles": {"position": "left", "avatar": {"paddingTop": "6px"}}}
              }'
              speechToText='{
                "button": {
                  "default": {
                    "container": {"default": {"bottom": "1em", "right": "0.6em", "borderRadius": "20px", "width": "1.9em", "height": "1.9em"}},
                    "svg": {"styles": {"default": {"bottom": "0.35em", "left": "0.35em"}}}
                  },
                  "position": "inside-right"
                }
              }'
              submitButtonStyles='{
                "position": "outside-right",
                "submit": {
                  "container": {
                    "default": {"bottom": "0.9em", "borderRadius": "25px", "padding": "6px 5px 4px", "backgroundColor": "#f3f6fc"},
                    "hover": {"backgroundColor": "#b0deff4f"},
                    "click": {"backgroundColor": "#b0deffb5"}
                  },
                  "svg": {
                    "content": "<?xml version=\"1.0\" encoding=\"utf-8\"?> <svg viewBox=\"0 0 24 24\" xmlns=\"http://www.w3.org/2000/svg\"><path d=\"m21.426 11.095-17-8A.999.999 0 0 0 3.03 4.242L4.969 12 3.03 19.758a.998.998 0 0 0 1.396 1.147l17-8a1 1 0 0 0 0-1.81zM5.481 18.197l.839-3.357L12 12 6.32 9.16l-.839-3.357L18.651 12l-13.17 6.197z\"/></svg>",
                    "styles": {
                      "default": {
                        "width": "1.5em",
                        "filter": "brightness(0) saturate(100%) invert(10%) sepia(86%) saturate(6044%) hue-rotate(205deg) brightness(100%) contrast(100%)"
                      }
                    }
                  }
                },
                "loading": {
                  "svg": {
                    "styles": {
                      "default": {
                        "filter": "brightness(0) saturate(100%) invert(72%) sepia(0%) saturate(3044%) hue-rotate(322deg) brightness(100%) contrast(96%)"
                      }
                    }
                  }
                },
                "stop": {
                  "container": {"hover": {"backgroundColor": "#ededed"}},
                  "svg": {
                    "styles": {
                      "default": {
                        "filter": "brightness(0) saturate(100%) invert(59%) sepia(0%) saturate(0%) hue-rotate(348deg) brightness(96%) contrast(93%)"
                      }
                    }
                  }
                }
              }'
              demo="true"
              connect='{"stream": true}'
            ></deep-chat>

export default {
  data() {
    return {
      activeTab: 'first',
      stockName: '',
      xAxisData: [],
      seriesData: [],
    };
  },
  methods: {
    requestIntercept(){
      const chatElementRef = document.getElementById('chatElement');
        chatElementRef.requestInterceptor = (requestDetails) => {
            console.log(requestDetails);
            requestDetails.body = { prompt: "the data is from "+ this.stockName +" and please answer the following question: "+requestDetails.body.messages[0].text };
            console.log(requestDetails);
            return requestDetails;
        }
    },

    
  },

I tried to use v-bind to bind the property requestInterspector to my method but it didn't work. Could you help me figure it out? Thx!