How to change ui icons?

[iguii]

How can i change the icons that lspsaga uses for diagnosis?
I've tried this with my configuration but it doesn't seem to work:

require("lspsaga").setup({
  init_lsp_saga = {
      error_sign = "",
      warn_sign = "",
      hint_sign = "",
      infor_sign = "",
     border_style = "round",
  }
})

is there anyway I can make the icons change?

[glepnir]

you mean virtual text ? it not set by lspsaga :help vim.diagnostic.config

[iguii]

sorry, I meant this part. The icons that are next to line numbers.

[glepnir]

it also set by neovim not lspsaga you can define them like

  local signs = {
    Error = ' ',
    Warn = ' ',
    Info = ' ',
    Hint = ' ',
  }
  for type, icon in pairs(signs) do
    local hl = 'DiagnosticSign' .. type
    vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = hl })
  end