Communication between MatLab and PSoC 4, through UART

In the side of MatLab (which controlled the communication)

    fprintf(serial_PSoC,'%c','a');%with this i select which sensor I want to graphic
       pause(0.1);
    
%         variable=fread(serial_PSoC,4,'%f');
%         recepcion_ADC= str2double(variable);

        recepcion_ADC=fscanf(serial_PSoC,'%f');
        
        ADC(contador)=recepcion_ADC(1);      
        figure(1)
        subplot(2,2,1)
        plot(ADC,'b');

.......

In the side of Creator (which is controlled or expected to receive what data is to transmit )

    //CyDelay(55);
            UART_ClearTxBuffer();//clean buffer
            if(sensor_mux==1)//this work fine
            {LED_Verde_Write(0);
                UART_ClearTxBuffer();//clean buffer
                UART_PutString(volt);//char volt[5]
                
                //CyDelay(5);// delay for the bufer (don't work)
                UART_ClearTxBuffer();//clean buffer
                LED_Verde_Write(1);
            }
            else if(sensor_mux==0)
            {
                LED_Verde_Write(0);
                UART_ClearTxBuffer();//clean buffer
               UART_PutString(temp);//char temp[5]  
               
                //CyDelay(5);// delay for the bufer (don't work)
                UART_ClearTxBuffer();//clean buffer
                LED_Verde_Write(1);
            }

Hi, bob and riot, sorry for delay, I was cleaning my code.
Here is both (creator and matlab).-

Happy new Year..!!