How can I implement recursive function in simulink model ?

Hi Good morning to all. here i need to use the shown recursive function in my simulink model so that i need to generate code from entire controller. i am failing to design this recursive function in model. can any one suggest me how to do ? I am also fine to use chat (state flow) ? ********************************************************************************************************************

static UINT16 DeadBandChkModule(UINT16 Frequency, UINT16 Delta_Freq)

{ if ((Frequency == (UINT16)Get(eDEADBAND_FREQUENCY1))||(Frequency == (UINT16)Get(eDEADBAND_FREQUENCY2))||(Frequency == (UINT16)Get(eDEADBAND_FREQUENCY3)))

    {  Frequency = (UINT16)Frequency + (UINT16)Delta_Freq;
     Frequency = (UINT16)DeadBandChkModule(Frequency,Delta_Freq);
  
     return Frequency;
      }
else
  
  return Frequency;
}