Unable to import a Library class

[ZiedWD]

Hello,

I have created a RF library including three classes.
I am able to import the first class of my Library using the following syntax :
Library LibName.Class1
Library LibName.Class2
Library LibName.Class3

keywords related to the first class are working fine, but as soon as I use a keyword from the second or the third class I got no keyword found error.

Any help please!