Invalid RSRCNAME specified. Type 'instrhelp visa' for more information.

hello

I am trying to program RIGOL DG1022z using matlab2018a. I am using GPIB/USB connection for this using NI driver

I have attached the relevant portion of the code

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The error am getting is :

dg1022z = visa('ni','USB0::Ox1AB1::DG1ZA192101792::INSTR');

fopen(dg1022z);

fprintf(dg1022z,':SOURce1:APPLy?');

query_CH1= fscanf(dg1022z);

fclosd(dg1022z);

display(query_CH1)

Error using : visa (line 222)

Invalid RSRCNAME specified. Type 'instrhelp visa' for more information.

Error in gpib_test : DG1022z_Demo_MATLAB (line 1)

dg1022z = visa('ni','USB0::Ox1AB1::DG1ZA192101792::INSTR');

How can I fix it?