How to generate table rows in bulk?

[Arbureva]

How to generate table rows in bulk?
this is my code, but it reports an error

Assertion failed: table->RowPosY1 == StartPosY && table->RowPosY2 == window->DC.CursorPos.y, file imgui.cpp, line 2366

// this is package main
g.Row(g.Table().Columns(
	g.TableColumn("nickname"),
	g.TableColumn("ID"),
).Rows(
	initdata.TableForUserRows...,
).FastMode(true).Freeze(1, 1).Size(326, 263-36)),

// this is package initdata
var TableForUserRows        []*g.TableRowWidget

// this is package service
initdata.Users = append(initdata.Users, user)
var table *g.TableRowWidget
initdata.TableForUserRows = append(initdata.TableForUserRows, table)
length := len(initdata.TableForUserRows) - 1
initdata.TableForUserRows[length] = g.TableRow(
	g.Checkbox(initdata.Users[length].Name, &initdata.Users[length].IsSelect).OnChange(func() {
		controller.ChangeUsers(length)
	}),
	g.Labelf("%v", initdata.Users[length].ID),
)
if initdata.Users[length].IsSelect {
	initdata.TableForUserRows[length].BgColor(color.RGBA{R: 0xee, G: 0x20, B: 0x20, A: 255})
}

[Arbureva]

I know where the problem lies,

g.Row(g.Table().Columns(
	g.TableColumn("nickname"),
	g.TableColumn("ID"),
).Rows(
	initdata.TableForUserRows...,
).FastMode(true).Freeze(1, 1).Size(326, 263-36)),

FastMode(true) here, but why？