Updated Code

app.py

@@ -94,4 +94,7 @@ def greet(input):
     y = str(y)
     return y
 
-iface = gr.Interface(fn=greet, inputs="text", outputs="text").launch(share=True)
+textbox_x = gr.Textbox(label="Variable X:", placeholder="10", lines=1)
+textbox_y = gr.Textbox(label="Variable Y:", placeholder ="11", lines=1)
+gr.Interface(title = "Lineare Regression",fn=greet, inputs=textbox_x, outputs=textbox_y).launch(share=True)
+