Update app.py

app.py

@@ -342,11 +342,18 @@ with st.form("project_form"):
         project_name = st.text_input("Project Name")
         phase = st.selectbox("Phase", [""] + ["Planning", "Design", "Construction"], index=0, key="phase_select")
         
-        if phase != st.session_state.phase:
+        # Update task options and reset task when phase changes
+        if phase != st.session_state.get("phase", ""):
             st.session_state.phase = phase
-            st.session_state.task = ""
+            st.session_state.task = ""  # Reset task
+            # Clear task_select to avoid stale values
+            if "task_select" in st.session_state:
+                del st.session_state.task_select
+        
+        # Define task options based on phase
         task_options_list = [""] + task_options.get(phase, []) if phase else [""]
         task = st.selectbox("Task", task_options_list, index=0, key="task_select")
+        
         current_progress = st.number_input("Current Progress (%)", min_value=0.0, max_value=100.0, step=1.0, value=0.0)
         task_expected_duration = st.number_input("Task Expected Duration (days)", min_value=0, step=1, value=0)
         task_actual_duration = st.number_input("Task Actual Duration (days)", min_value=0, step=1, value=0)