diff --git a/src/server_env_manager.cpp b/src/server_env_manager.cpp
index 13056c8..979f8d3 100644
--- a/src/server_env_manager.cpp
+++ b/src/server_env_manager.cpp
@@ -44,7 +44,17 @@ server_env_manager::server_env_manager(const std::string& server_name) : mValid(
 
        // get the variables from the json
        for (const auto& var : server_env_json.items()) {
-            mVariables[var.key()] = replace_with_environment_variables_like_bash(var.value());
+            std::string value;
+            if (var.value().is_string())
+                value = var.value();
+            else if (var.value().is_number_integer())
+                value = std::to_string(var.value().get<int>());
+            else if (var.value().is_boolean())
+                value = var.value() ? "true" : "false";
+            else
+                value = var.value().dump();
+
+            mVariables[var.key()] = replace_with_environment_variables_like_bash(value);
        }
 
         // Verify required variables exist