Array and IF - THEN

[Gusse]

I tried to search info about how to handle input strings (arrays) and do selections based on what was received to an array, but not so good success. Most probably I don't know what are the right key words..., but anyway.
Below is sample code, which is very similar that I have in the program. Only difference is that I use 6 bytes instead of 4. Code is working OK.

Question is, can I do this more sophisticated way?
I have lots of similar IF - THEN and I really want to know if there would be a more simple way to do this.

<code><font color="#000000">LED         <b>VAR </b>PortB.0
Data_Array  <b>VAR BYTE </b>[4]

Mainloop:
    <b>DEBUGIN </b>1000, Mainloop, [<b>STR </b>Data_Array\4]
    <b>IF </b>Rele_Array[0] = <font color="#FF0000">&quot;A&quot; </font><b>THEN
        IF </b>Rele_Array[1] = <font color="#FF0000">&quot;B&quot; </font><b>THEN
            IF </b>Rele_Array[2] = <font color="#FF0000">&quot;C&quot; </font><b>THEN
                IF </b>Rele_Array[3] = <font color="#FF0000">&quot;1&quot; </font><b>THEN
                    HIGH </b>LED                    <font color="#000080"><i>'If received ABC1
                    </i></font><b>PAUSE </b>1000                  <font color="#000080"><i>'then turn LED on
                    </i></font><b>LOW </b>LED                     <font color="#000080"><i>'for 1s and return
                    </i></font><b>GOTO </b>Mainloop               <font color="#000080"><i>'to Mainloop
                </i></font><b>ENDIF
                IF </b>Rele_Array[3] = <font color="#FF0000">&quot;2&quot; </font><b>THEN
                    HIGH </b>LED                    <font color="#000080"><i>'If received ABC2
                    </i></font><b>PAUSE </b>2000                  <font color="#000080"><i>'then turn LED on
                    </i></font><b>LOW </b>LED                     <font color="#000080"><i>'for 2s and return
                    </i></font><b>GOTO </b>Mainloop               <font color="#000080"><i>'to Mainloop
                </i></font><b>ENDIF
            ENDIF
        ENDIF
    ENDIF

    END

</b></code>

BR,
-Gusse-