Inserting custom bits into QPSKmodulator in Simulink

Hi there. Im currently using Simulink to Processing custom signals.

But all qpsk modulating examples what Mathworks have provided use Bernoulli bit generator for Modulator's Input.

I want to send MY CUSTOM BITS by using these examples.

I made My custom bits manually, and it is currently in 230400 * 8 Matrix.

(320 * 240 RGB image -> 320 * 240 * 3 = 230,400 (uint8) -> 230,400 * 8 = 1,843,200 bits )

How can I Input Matrix what consists of custom bits into QPSKmodulator ?

Regards.