Is it possible to create a `createCustomAction$`?

import { createServerForm$, Field, zodForm } from "@modular-forms/solid";
import { z } from "zod";
import { TextInput, Button } from "~/components";

const loginSchema = z.object({
  email: z
    .string()
    .min(1, "Please enter your email.")
    .email("The email address is badly formatted."),
  password: z
    .string()
    .min(1, "Please enter your password.")
    .min(8, "You password must have 8 characters or more."),
});

export default function LoginRoute() {
  const [loginForm, Form] = createServerForm$<z.infer<typeof loginSchema>>({
    validate: zodForm(loginSchema),
    onSubmit: async (values) => {
      // Your code
    },
  });

  return (
    <Form>
      <Field of={loginForm} name="email">
        {(field) => (
          <TextInput
            {...field.props}
            type="email"
            label="Email"
            value={field.value}
            error={field.error}
            required
          />
        )}
      </Field>
      <Field of={loginForm} name="password">
        {(field) => (
          <TextInput
            {...field.props}
            type="password"
            label="Password"
            value={field.value}
            error={field.error}
            required
          />
        )}
      </Field>
      <Button type="submit">Login</Button>
    </Form>
  );
}