diff --git a/Model.py b/Model.py
index 7988459..f99227f 100644
--- a/Model.py
+++ b/Model.py
@@ -348,8 +348,9 @@ class Model:
             FCa_0,  # FCa
         ]
 
-    def calculated_current(self):
-        return 
+    def calculated_current(self, states, t, V):
+        ICaL = self.gCaL * states[1, :] * (V - self.ECaL)
+        return ICaL
 
     def solve(self, initial_values, tspan, dt, times):
         times = np.arange(*tspan, dt)
diff --git a/__pycache__/Model.cpython-311.pyc b/__pycache__/Model.cpython-311.pyc
index b9c7d0c..e77852e 100644
Binary files a/__pycache__/Model.cpython-311.pyc and b/__pycache__/Model.cpython-311.pyc differ
diff --git a/fitter.py b/fitter.py
index e527ec5..ffbd7a0 100644
--- a/fitter.py
+++ b/fitter.py
@@ -42,7 +42,7 @@ class Fitter:
             return current
 
         k = np.zeros(current.size)
-        k[k.size // 2 :] = np.exp(-np.arange(k.size // 2) / np.abs(tau))
+        k[k.size // 2:] = np.exp(-np.arange(k.size // 2) / np.abs(tau))
         k /= k.sum()
 
         if tau > 0:
@@ -68,7 +68,10 @@ class Fitter:
             initial_values=self.initial_values
         )
 
-        _calc_curr = model.calculated_current()
+        states = self.initial_values
+        V = model.mem_potential(t)
+        t = self.tspan
+        _calc_curr = model.calculated_current(states, t, V)
         calculated_current = (
             self.convolve_current(_calc_curr, tau=tau_RC)[self.current_time_indecies]
             + offset