diff --git a/Project.toml b/Project.toml
index 18b24fd..b937b4d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "StateSpaceLearning"
 uuid = "971c4b7c-2c4e-4bac-8525-e842df3cde7b"
 authors = ["andreramosfc <andreramosfdc@gmail.com>"]
-version = "1.4.0"
+version = "1.4.1"
 
 [deps]
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
diff --git a/src/models/structural_model.jl b/src/models/structural_model.jl
index 0a57f1d..7fe96e3 100644
--- a/src/models/structural_model.jl
+++ b/src/models/structural_model.jl
@@ -131,6 +131,12 @@ mutable struct StructuralModel <: StateSpaceLearningModel
             stochastic_start,
             Exogenous_X,
         )
+        # convert y format into vector or matrix of AbstractFloat
+        if typeof(y) <: Vector
+            y = convert(Vector{AbstractFloat}, y)
+        else
+            y = convert(Matrix{AbstractFloat}, y)
+        end
         return new(
             y,
             X,