how to set values in the same register in the PL side

Hello

I have flags that I set from my PS soc. Know to read them from PL side I have an implementation error when I use the same register !

 test1 <= slv_reg3(31);
    test2 <= slv_reg3(30);
    PSenable <= slv_reg3(29); 

the error :

https://alteraforum.com/forum/attachment.php?attachmentid=13876&stc=1