判断一个变量是否在一个列表里

Array<string> BlackSection;BlackSection = [\"rb\", \"hc\", \"i\", \"j\", \"jm\", \"sf\", \"sm\"];symbol_target = lower(SymbolType());.if (symbol_target in BlackSection) {fund = 150000;}这个if条件会报错，应该怎么写