would it be possible to specify a probe number as Target for ping/traceroute mesurements? If no, could you advise, how i can programmatically mesure ping/traceroute between different pairs of probes. (It takes much time to do it manually).

If the probe has public DNS turned on, you can use a DNS name to refer to a probe - for example, my probe is number 10189 and appears in DNS as p10189.probes.atlas.ripe.net. You could use that name as the target for the ping. --