SystemVerilog error: parameter with complex/aggregate value must have a type

Hi, everyone. I am the first time asking the questions here.

	parameter  command = {		// Clear the screen and set cursor position to home
		8'h1B,		// Esc
		8'h5B,		// [
		8'h6A,		// j
		// Set the cursor position to row 0 column 3
		8'h1B,		// Esc
		8'h5B,		// [
		8'h30,		// 0
		8'h3B,		// ;
		8'h33,		// 3
		8'h48,		// H
		// Text to print out on the screen
		8'h48,		// H
		8'h65,		// e
		8'h6C,		// l			is lowercase L, not number one
		8'h6C,		// l			is lowercase L, not number one
		8'h6F,		// o
		8'h20,		// Space
		8'h46,		// F
		8'h72,		// r
		8'h6F,		// o
		8'h6D,		// m
		// Set the cursor position to row 1 column 4
		8'h1B,		// Esc
		8'h5B,		// [
		8'h31,		// 1			is number one not L
		8'h3B,		// ;
		8'h34,		// 4
		8'h48,		// H
		// Text to print out on the screen
		8'h44,		// D
		8'h69,		// i
		8'h67,		// g
		8'h69,		// i
		8'h6C,		// l			is lowercase L, not number one
		8'h65,		// e
		8'h6E,		// n
		8'h74,		// t
		8'h00		// Null
	};