diff --git a/serve.py b/serve.py
index d97bd3c..313fe6e 100644
--- a/serve.py
+++ b/serve.py
@@ -19,6 +19,13 @@ def criterias():
         data = json.load(file)
         return data
 
+@app.route('/params')
+def params():
+    print("get params")
+
+    with open('data.csv', 'r') as file:
+        content = file.read()
+        return content
 
 if __name__ == '__main__':
     app.run(port=1984)
diff --git a/src/main.rs b/src/main.rs
index 5f80938..1719553 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -145,14 +145,22 @@ fn App() -> Html {
                     <div class="w3-quarter">{ "my job" }</div>
                     <div class="w3-quarter">{ "How it maters" }</div>
                 </div>
-                { for (*criterias_state_5).clone().into_iter().map(|criteria: Criteria| {
-                    let param = (*parameter_state).clone().into_iter().find(|param| param.id == criteria.id).unwrap();
-                    html! {
-                        <div>
-                            <Slider on_parameter_slide={on_param_value_slide.clone()} on_coef_slide={on_coef_slide.clone()} salary_param={param} criteria={criteria} />
-                        </div>
+                if (*criterias_state_5).len() == (*parameter_state).len() {
+                    <div>
+                    {
+                        for (*criterias_state_5).clone().into_iter().map(|criteria: Criteria| {
+                            let param = (*parameter_state).clone().into_iter().find(|param| param.id == criteria.id).unwrap();
+                            html! {
+                                <div>
+                                  <Slider on_parameter_slide={on_param_value_slide.clone()} on_coef_slide={on_coef_slide.clone()} salary_param={param} criteria={criteria} />
+                                </div>
+                            }
+                        })
                     }
-                })}
+                    </div>
+                } else {
+                    <div>{"loading or data mismatch somewhere..."}</div>
+                }
             </div>
         </div>
     }
diff --git a/src/salary_param.rs b/src/salary_param.rs
index e3e56a6..7b14542 100644
--- a/src/salary_param.rs
+++ b/src/salary_param.rs
@@ -1,4 +1,8 @@
-#[derive(Copy, Clone, Debug)]
+use serde::Deserialize;
+
+const _PARAM_DATA_URL: &str = "http://localhost:1984/params";
+
+#[derive(Clone, Debug, Deserialize)]
 pub struct SalaryParam {
     pub id: &'static str,
     pub value: i8,
diff --git a/src/slider.rs b/src/slider.rs
index 249e808..2684609 100644
--- a/src/slider.rs
+++ b/src/slider.rs
@@ -30,6 +30,7 @@ pub fn Slider(props: &Props) -> Html {
     let coef_value = (*coef_value_handle).clone();
 
     let salary_param = props.salary_param.clone();
+    let salary_param_2 = props.salary_param.clone();
     let criteria = props.criteria.clone();
     
     let cb_value_handle = props.on_parameter_slide.clone();
@@ -55,7 +56,7 @@ pub fn Slider(props: &Props) -> Html {
             if let Some(input) = input {
                 coef_value_handle.set(input.value());
                 cb_coef_handle.emit( SliderCoefMessage { 
-                    id: salary_param.id.to_string(),
+                    id: salary_param_2.id.to_string(),
                     coef: input.value().parse::<f64>().expect("expected number")
                  });
             }