It is possible to initialize reduce toolkit entityManager in action and use it?

Question

I would like to initialize my EntityAdapter from an action an use it in the same action

I have an Order object with lines in my state. I want to use an entityAdapter for the lines but if the user don't start an order, Order is null

The order is not existing while the user don't press the add button

This is my code

Reducer action `

export const addProductToCurrentOrderAction = (
  state: appState,
  action: PayloadAction<{ quantity: number; product: Product }>,
) => {
  const { quantity, product } = action.payload;

  // if order doen't exist, I create a new one with lines = orderLinesAdapter.getInitialState()
  if (state.currentOrder === null) {
    state.currentOrder = createOrderDoc(state.userState.user);
  }

  // check if the line already exist
  let orderLineTest = state.currentOrder.lines.entities[product.ean];
  if (!orderLineTest) {
    // if not I create a new orderLine
    orderLineTest = createOrderLineFromProduct(product, state.configState.config);
  }

  // set line quantity and line total
  orderLineTest.quantity = quantity;

  // add or update line
  orderLinesAdapter.addOne(state.currentOrder.lines, orderLineTest);
};

`

This only work if the order is already created (on first run the line is not added to entityAdapter)

I'm supposed there is a tricky problem with the entityAdapter update outside the action

Maybe the way to do this is not really correct for redux-toolkit?