clock control intel FPGA IP is not correct

I have created a project in quartus prime pro 23.4 ant I have used clock control intel FPGA IP as a MUX for clock.And When I run synthesis error encouted. Error(13224): Verilog HDL or VHDL error at clk_mux_stratix10_clkctrl_2000_yem6tmi.v(67): index 1 is out of range [0:0] for 'clkselect' below is the detail part of clk_mux_stratix10_clkctrl_2000_yem6tmi.v module clk_mux_stratix10_clkctrl_2000_yem6tmi_clksel_mux ( input inclk0x, input inclk1x, input clkselect, output clkout ); parameter num_clocks = 2; genvar i; wire [num_clocks-1:0] clk; wire [num_clocks-1:0] clk_select; // one hot reg [num_clocks-1:0] ena_r0; reg [num_clocks-1:0] ena_r1; reg [num_clocks-1:0] ena_r2; wire [num_clocks-1:0] qualified_sel; // A look-up-table (LUT) can glitch when multiple inputs // change simultaneously. Use the keep attribute to // insert a hard logic cell buffer and prevent // the unrelated clocks from appearing on the same LUT. assign clk[0] = inclk0x; assign clk[1] = inclk1x; // Decoder logic assign clk_select[0] = ~clkselect[1] & ~clkselect[0]; assign clk_select[1] = ~clkselect[1] & clkselect[0];