VBA: ComboBox based on the value from the first ComboBox

[MarioMagnus]

Hi,
I need help with a userform with two comboboxes.
The date in the minisheet is an example and the formula that I use workes within the sheet, but I need to bring this into a userform.
I select the name based on the column 1 and when a available name is selected, I need to run the formula to bring all available dates for the actually month in the combobox two.

I hope I could explain what I need. I hope you can help me with that problem.

Book1
	A	B	C	D	E	F	G	H	I	J
1	Name	Datum	Monat
2	Yanik	5/12/21	5
3	Noémie	5/13/21	5
4	Yanik	5/13/21	5
5	Noémie	5/14/21	5				Noémie	5		13/05/2021
6	Yanik	5/14/21	5							14/05/2021
7	Noémie	5/15/21	5							15/05/2021
8	Yanik	5/15/21	5							16/05/2021
9	Noémie	5/16/21	5							17/05/2021
10	Yanik	5/16/21	5							18/05/2021
11	Noémie	5/17/21	5							20/05/2021
12	Yanik	5/17/21	5
13	Noémie	5/18/21	5
14	Yanik	5/18/21	5
15	Noémie	5/20/21	5
16	Yanik	5/20/21	5
17	Yanik	5/26/21	5
18	Noémie	6/2/21	6
19	Yanik	6/2/21	6
20	Yanik	6/4/21	6
21	Noémie	6/11/21	6
22	Yanik	6/11/21	6
23	Noémie	6/12/21	6
24	Yanik	6/12/21	6
25	Noémie	6/13/21	6
26	Yanik	6/13/21	6
27	Sophie	6/22/21	6
28	Noé	6/22/21	6
29	Noémie	6/23/21	6
30	Yanik	6/23/21	6
31	Yanik	6/24/21	6
32	Lars	6/24/21	6
33	Yanik	6/28/21	6
34	Noémie	6/29/21	6
35	Yanik	6/29/21	6
36	Noémie	7/8/21	7
37	Yanik	7/8/21	7
38	Yanik	7/9/21	7
39	Noémie	7/9/21	7
40	Noémie	7/10/21	7
41	Yanik	7/10/21	7
Sheet1

Cell Formulas
Range	Formula
J5:J38	J5	{=IFERROR(INDEX($B$2:$B$51, SMALL(IF(COUNTIF($G$5, $A$2:$A$51)*COUNTIF($H$5, $C$2:$C$51), ROW($A$2:$C$51)-MIN(ROW($A$2:$C$51))+1), ROW(A1)), COLUMN(A1)),"")}

Thanks, Mario.