thank you very much vor your quick reply, worked out fine !
could you be so kind and explain to me what the " optional source domain " is, for what stuff used ?
By default, the source domain is 0~1. However, let's assume you want to remap numbers from Celsius to Fahrenheit. Zero degrees Celsius equals 32 Fahrenheit and 100 degrees Celsius equals 212 Fahrenheit. The 0~1 domain isn't of much use here, as the source domain should be defined as 0~100 and the target domain as 32~212.
Or, assume you want to remap degrees to radians. 180 degrees equals pi radians, meaning the source domain should be 0~180 and the target domain 0~pi