Invalid answer for selecting drives

[szakyy]

What am I doing wrong?

Synology DS1817+ ; M2D18 card ; 2x WD RED SATA M2

Using the latest v1 version of the script and it is saying that I am giving invalid answer, when I am trying to set the RAID 1.

Shall I do anything before executing the script?

thx

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Synology_M2_volume v1.3.25
DS1817+-j DSM 7.1.1-42962-9

Using options:

Running from: /volume1/Download/Synology_M2_volume-1.3.25/syno_create_m2_volume.sh

There is a newer version of this script available.
Current version: v1.3.25
Latest version:  v2.1.31
Do you want to download v2.1.31 now? [y/n]
n
Type yes to continue. Type anything else to do a dry run test.
yes

SATA M.2 nvc1 is WDC WDS500G1R0B-68A4Z0
**No existing partitions on drive**

SATA M.2 nvc2 is WDC WDS500G1R0B-68A4Z0
**No existing partitions on drive**

Unused M.2 drives found: 2

1) Single
2) RAID 0
3) RAID 1
Select the RAID type: 3
You selected RAID 1

1) nvc1
2) nvc2
Select the M.2 drive #1: 1
**Invalid answer! Try again.**
Select the M.2 drive #1: 2
**Invalid answer! Try again.**
Select the M.2 drive #1:

[007revad]

Try this version: https://github.com/007revad/Synology_M2_volume/releases/tag/v1.3.26