diff --git a/src/hook/index.ts b/src/hook/index.ts
index 1981a3c..94df74d 100644
--- a/src/hook/index.ts
+++ b/src/hook/index.ts
@@ -2,6 +2,7 @@ import { HOOK_NAME } from "../shared/constants";
 import { getBricks, getBrickByUid, getBrickInfo } from "./traverse";
 import { inspectElement, dismissInspections } from "./inspector";
 import { emit } from "./emit";
+import { overrideProps } from "./overrideProps";
 
 function injectHook(): void {
   if (Object.prototype.hasOwnProperty.call(window, HOOK_NAME)) {
@@ -15,6 +16,8 @@ function injectHook(): void {
     inspectBrick: (uid: number) => inspectElement(getBrickByUid(uid)),
     dismissInspections,
     emit,
+    overrideProps: (uid: number, propertyName: string, value: any) =>
+      overrideProps(getBrickByUid(uid), propertyName, value),
   };
 
   Object.defineProperty(hook, "pageHasBricks", {
diff --git a/src/hook/overrideProps.spec.ts b/src/hook/overrideProps.spec.ts
new file mode 100644
index 0000000..c8562a3
--- /dev/null
+++ b/src/hook/overrideProps.spec.ts
@@ -0,0 +1,17 @@
+import { overrideProps } from "./overrideProps";
+import { BrickElement } from "../shared/interfaces";
+
+describe("overrideProps", () => {
+  it("should work", () => {
+    overrideProps(undefined, "showCard", false);
+    const element =
+      {
+        tagName: "YOUR.awesome-brick",
+      } as BrickElement;
+    overrideProps(element, "showCard", false);
+    expect(element).toEqual({
+      tagName: "YOUR.awesome-brick",
+      showCard: false,
+    });
+  });
+});
diff --git a/src/hook/overrideProps.ts b/src/hook/overrideProps.ts
new file mode 100644
index 0000000..2725bc7
--- /dev/null
+++ b/src/hook/overrideProps.ts
@@ -0,0 +1,11 @@
+import { BrickElement } from "../shared/interfaces";
+
+export function overrideProps(
+  element: BrickElement,
+  propertyName: string,
+  value: any
+): void {
+  if (element) {
+    element[propertyName] = value;
+  }
+}
diff --git a/src/panel/components/PropList.spec.tsx b/src/panel/components/PropList.spec.tsx
index 2511bb5..129b08a 100644
--- a/src/panel/components/PropList.spec.tsx
+++ b/src/panel/components/PropList.spec.tsx
@@ -1,6 +1,6 @@
 import React from "react";
 import { shallow } from "enzyme";
-import { Icon } from "@blueprintjs/core";
+import { Icon, TextArea } from "@blueprintjs/core";
 import { PropList, PropItem } from "./PropList";
 import { PROP_DEHYDRATED } from "../../shared/constants";
 
@@ -76,10 +76,14 @@ describe("PropItem", () => {
     const wrapper = shallow(<PropItem propName="quality" propValue="good" />);
     expect(wrapper.hasClass("expanded")).toBe(false);
     expect(wrapper.find(Icon).prop("icon")).toBe("blank");
-    wrapper.find(".prop-item-label").invoke("onClick")(null);
+    wrapper.find('span[data-testid="prop-name-wrapper"]').invoke("onClick")(
+      null
+    );
     expect(wrapper.hasClass("expanded")).toBe(true);
     expect(wrapper.find(Icon).prop("icon")).toBe("blank");
-    wrapper.find(".prop-item-label").invoke("onClick")(null);
+    wrapper.find('span[data-testid="prop-name-wrapper"]').invoke("onClick")(
+      null
+    );
     expect(wrapper.hasClass("expanded")).toBe(false);
     expect(wrapper.find(Icon).prop("icon")).toBe("blank");
   });
@@ -88,7 +92,9 @@ describe("PropItem", () => {
     const wrapper = shallow(<PropItem propName="quality" propValue={[1]} />);
     expect(wrapper.find(PropList).length).toBe(0);
     expect(wrapper.find(Icon).prop("icon")).toBe("caret-right");
-    wrapper.find(".prop-item-label").invoke("onClick")(null);
+    wrapper.find('span[data-testid="prop-name-wrapper"]').invoke("onClick")(
+      null
+    );
     expect(wrapper.find(PropList).prop("list")).toEqual([1]);
     expect(wrapper.find(Icon).prop("icon")).toBe("caret-down");
   });
@@ -102,8 +108,51 @@ describe("PropItem", () => {
   it("should work for standalone with complex property value", () => {
     const wrapper = shallow(<PropItem propValue={[1]} standalone />);
     expect(wrapper.find(Icon).prop("icon")).toBe("caret-right");
-    wrapper.find(".prop-item-label").invoke("onClick")(null);
+    wrapper.find('span[data-testid="prop-name-wrapper"]').invoke("onClick")(
+      null
+    );
     expect(wrapper.find(PropList).prop("list")).toEqual([1]);
     expect(wrapper.find(Icon).prop("icon")).toBe("caret-down");
+    wrapper.find(".prop-value").invoke("onDoubleClick")({} as any);
+    expect(wrapper.find(TextArea).length).toBe(0);
+  });
+
+  it("should work when editable", () => {
+    const wrapper = shallow(
+      <PropItem propName="quality" propValue="good" editable />
+    );
+    expect(wrapper.find(TextArea).length).toBe(0);
+    wrapper.find(".prop-value").invoke("onDoubleClick")({} as any);
+    expect(wrapper.find(TextArea).length).toBe(1);
+    wrapper.find(TextArea).invoke("onChange")({
+      target: {
+        value: '"bad"',
+      },
+    } as any);
+    expect(wrapper.find(TextArea).prop("value")).toBe('"bad"');
+    wrapper.find(TextArea).invoke("onBlur")({} as any);
+    expect(wrapper.find(".bp3-intent-danger").length).toBe(0);
+    expect(wrapper.find(TextArea).length).toBe(0);
+
+    wrapper.find(".prop-value").invoke("onDoubleClick")({} as any);
+    wrapper.find(TextArea).invoke("onChange")({
+      target: {
+        value: "{a:errorJsonStringValue",
+      },
+    } as any);
+    expect(wrapper.find(TextArea).prop("value")).toBe(
+      "{a:errorJsonStringValue"
+    );
+    wrapper.find(TextArea).invoke("onBlur")({} as any);
+    expect(wrapper.find(".bp3-intent-danger").length).toBe(1);
+    expect(wrapper.find(TextArea).length).toBe(1);
+    wrapper.find(TextArea).invoke("onChange")({
+      target: {
+        value: undefined,
+      },
+    } as any);
+    expect(wrapper.find(TextArea).prop("value")).toBe(undefined);
+    wrapper.find(TextArea).invoke("onBlur")({} as any);
+    expect(wrapper.find(".bp3-intent-danger").length).toBe(0);
   });
 });
diff --git a/src/panel/components/PropList.tsx b/src/panel/components/PropList.tsx
index c0dae83..b6bff5b 100644
--- a/src/panel/components/PropList.tsx
+++ b/src/panel/components/PropList.tsx
@@ -1,15 +1,21 @@
 import React from "react";
 import classNames from "classnames";
-import { Icon } from "@blueprintjs/core";
+import { Icon, TextArea } from "@blueprintjs/core";
 import { PROP_DEHYDRATED } from "../../shared/constants";
 import { VariableDisplay } from "./VariableDisplay";
 import { isDehydrated, isObject } from "../libs/utils";
 
 interface PropListProps {
   list: any[] | Record<string, any>;
+  editable?: boolean;
+  overrideProps?: (propName: string, propValue: string) => void;
 }
 
-export function PropList({ list }: PropListProps): React.ReactElement {
+export function PropList({
+  list,
+  editable,
+  overrideProps,
+}: PropListProps): React.ReactElement {
   const value = isDehydrated(list)
     ? list[PROP_DEHYDRATED].children || {}
     : list;
@@ -17,10 +23,22 @@ export function PropList({ list }: PropListProps): React.ReactElement {
     <ul className="prop-list">
       {Array.isArray(value)
         ? value.map((item, index) => (
-            <PropItem key={index} propName={String(index)} propValue={item} />
+            <PropItem
+              key={index}
+              propName={String(index)}
+              propValue={item}
+              overrideProps={overrideProps}
+              editable={editable}
+            />
           ))
         : Object.entries(value).map((entry) => (
-            <PropItem key={entry[0]} propName={entry[0]} propValue={entry[1]} />
+            <PropItem
+              key={entry[0]}
+              propName={entry[0]}
+              propValue={entry[1]}
+              overrideProps={overrideProps}
+              editable={editable}
+            />
           ))}
     </ul>
   );
@@ -30,19 +48,54 @@ interface PropItemProps {
   propValue: any;
   propName?: string;
   standalone?: boolean;
+  editable?: boolean;
+  overrideProps?: (propName: string, propValue: string) => void;
 }
 
 export function PropItem({
   propValue,
   propName,
   standalone,
+  editable,
+  overrideProps,
 }: PropItemProps): React.ReactElement {
   const [expanded, setExpanded] = React.useState(false);
+  const [editing, setEditing] = React.useState(false);
+  const [changeValue, setChangeValue] = React.useState(
+    JSON.stringify(propValue, null, 2)
+  );
+  const [error, setError] = React.useState(false);
 
   const handleClick = React.useCallback(() => {
     setExpanded(!expanded);
   }, [expanded]);
 
+  const handleDoubleClick = React.useCallback(() => {
+    if (editable) {
+      setEditing(true);
+    }
+  }, [editable]);
+
+  const handleBlur = () => {
+    try {
+      let result;
+      if (changeValue === "" || changeValue === undefined) {
+        result = undefined;
+      } else {
+        result = JSON.parse(changeValue);
+      }
+      overrideProps?.(propName, changeValue);
+      setEditing(false);
+      setError(false);
+    } catch (error) {
+      setError(true);
+    }
+  };
+
+  const handleChange = (v) => {
+    setChangeValue(v.target?.value);
+  };
+
   const hasChildren = isObject(propValue);
 
   return React.createElement(
@@ -51,29 +104,47 @@ export function PropItem({
       className: classNames("prop-item", { expanded }),
     },
     <>
-      <div
-        className="bp3-text-overflow-ellipsis prop-item-label"
-        onClick={handleClick}
-      >
-        {(!standalone || hasChildren) && (
-          <Icon
-            icon={
-              hasChildren ? (expanded ? "caret-down" : "caret-right") : "blank"
-            }
-            iconSize={16}
+      <div className="bp3-text-overflow-ellipsis prop-item-label">
+        <span onClick={handleClick} data-testid="prop-name-wrapper">
+          {(!standalone || hasChildren) && (
+            <Icon
+              icon={
+                hasChildren && !editing
+                  ? expanded
+                    ? "caret-down"
+                    : "caret-right"
+                  : "blank"
+              }
+              iconSize={16}
+            />
+          )}
+          {!standalone && (
+            <>
+              <span className="prop-name">{propName}</span>
+              <span className="prop-punctuation">:</span>{" "}
+            </>
+          )}
+        </span>
+        {editing && editable ? (
+          <TextArea
+            growVertically={true}
+            onChange={handleChange}
+            onBlur={handleBlur}
+            value={changeValue}
+            className={`prop-editable ${error ? "bp3-intent-danger" : ""}`}
+            autoFocus
           />
+        ) : (
+          <span className="prop-value" onDoubleClick={handleDoubleClick}>
+            <VariableDisplay value={propValue} expanded={expanded} />
+          </span>
         )}
-        {!standalone && (
-          <>
-            <span className="prop-name">{propName}</span>
-            <span className="prop-punctuation">:</span>{" "}
-          </>
-        )}
-        <span className="prop-value">
-          <VariableDisplay value={propValue} expanded={expanded} />
-        </span>
       </div>
-      {hasChildren && expanded && <PropList list={propValue} />}
+      {hasChildren && expanded && !editing && (
+        <div onDoubleClick={handleDoubleClick}>
+          <PropList list={propValue} />
+        </div>
+      )}
     </>
   );
 }
diff --git a/src/panel/components/PropView.spec.tsx b/src/panel/components/PropView.spec.tsx
index b62c15a..9dfb009 100644
--- a/src/panel/components/PropView.spec.tsx
+++ b/src/panel/components/PropView.spec.tsx
@@ -56,10 +56,11 @@ describe("PropView", () => {
     expect(wrapper.find(PropList).at(0).prop("list")).toEqual({
       quality: "good",
     });
+    expect(wrapper.find(PropList).at(0).prop("editable")).toBe(true);
     expect(wrapper.find(PropList).at(1).prop("list")).toEqual([
       ["click", { action: "console.log" }],
     ]);
-
+    expect(wrapper.find(PropList).at(1).prop("editable")).toBe(false);
     (useSelectedBrickContext as jest.Mock).mockReset();
   });
 
@@ -75,4 +76,26 @@ describe("PropView", () => {
     expect(document.execCommand).toBeCalledWith("copy");
     expect(document.removeEventListener).toHaveBeenCalled();
   });
+
+  it("should work when overrideProps", () => {
+    const selectedBrick = {
+      uid: 1,
+    };
+    (useSelectedBrickContext as jest.Mock).mockReturnValue({ selectedBrick });
+    const wrapper = mount(<PropView />);
+    expect(mockEval.mock.calls[0][0]).toBe(
+      "window.__BRICK_NEXT_DEVTOOLS_HOOK__.getBrickInfo(1)"
+    );
+    const mockEvalOverrideProps = jest.fn();
+    (window as any).chrome = {
+      devtools: {
+        inspectedWindow: {
+          eval: mockEvalOverrideProps,
+        },
+      },
+    };
+    wrapper.find(PropList).at(0).invoke("overrideProps")("quality", "bad");
+    expect(mockEvalOverrideProps).toHaveBeenCalled();
+    (useSelectedBrickContext as jest.Mock).mockReset();
+  });
 });
diff --git a/src/panel/components/PropView.tsx b/src/panel/components/PropView.tsx
index e2f21ee..f5a9440 100644
--- a/src/panel/components/PropView.tsx
+++ b/src/panel/components/PropView.tsx
@@ -36,21 +36,36 @@ export function PropView(): React.ReactElement {
   const { selectedBrick } = useSelectedBrickContext();
   const [brickInfo, setBrickInfo] = React.useState<BrickInfo>({});
 
+  const handleBrickInfoChange = React.useCallback(() => {
+    chrome.devtools.inspectedWindow.eval(
+      `window.${HOOK_NAME}.getBrickInfo(${selectedBrick.uid})`,
+      function (result: DehydratedBrickInfo, error) {
+        // istanbul ignore if
+        if (error) {
+          console.error("getBrickInfo()", error, result);
+        }
+        setBrickInfo(hydrate(result.info, result.repo));
+      }
+    );
+  }, [selectedBrick]);
+
   React.useEffect(() => {
     if (selectedBrick) {
-      chrome.devtools.inspectedWindow.eval(
-        `window.${HOOK_NAME}.getBrickInfo(${selectedBrick.uid})`,
-        function (result: DehydratedBrickInfo, error) {
-          // istanbul ignore if
-          if (error) {
-            console.error("getBrickInfo()", error, result);
-          }
-
-          setBrickInfo(hydrate(result.info, result.repo));
-        }
-      );
+      handleBrickInfoChange();
     }
-  }, [selectedBrick]);
+  }, [selectedBrick, handleBrickInfoChange]);
+
+  const overrideProps = React.useCallback(
+    (propName: string, propValue: string) => {
+      // istanbul ignore else
+      if (selectedBrick) {
+        const evalParams = `window.${HOOK_NAME}.overrideProps(${selectedBrick.uid},"${propName}",${propValue})`;
+        chrome.devtools.inspectedWindow.eval(evalParams);
+        handleBrickInfoChange();
+      }
+    },
+    [selectedBrick, handleBrickInfoChange]
+  );
 
   if (!selectedBrick || !brickInfo) {
     return null;
@@ -87,7 +102,11 @@ export function PropView(): React.ReactElement {
                 )}
               </div>
               <div className="expanded">
-                <PropList list={brickInfo[key]} />
+                <PropList
+                  list={brickInfo[key]}
+                  overrideProps={overrideProps}
+                  editable={key !== "events"}
+                />
               </div>
             </React.Fragment>
           ))}
diff --git a/src/panel/style.css b/src/panel/style.css
index 1c05d07..bd99859 100644
--- a/src/panel/style.css
+++ b/src/panel/style.css
@@ -156,7 +156,7 @@ body {
   cursor: default;
 }
 
-.prop-item-label > .bp3-icon {
+.prop-item-label > span > .bp3-icon {
   /* margin-top: -1px; */
   vertical-align: middle;
   color: var(--caret-color);
@@ -166,6 +166,13 @@ body {
   color: var(--source-code-name);
 }
 
+.prop-editable {
+  font-size: 12px;
+  margin: 10px 0 10px 18px;
+  display: block;
+  width: 90%;
+}
+
 .variable-string {
   color: var(--source-code-string);
 }