Hello Caspio Guru,
Thank for your help. I use the format of your example and now there are markers on the map.
I am very glad, but the markers are on the wrong place.
For example
52.0973888 67.72181328 is in Kazachstan, but I supposed it will be a point in The Netherlands.
Is there a different x,y system that I must use?
CaspioHeleen