Template Report

I try to create on Project report, the list of activity link to this project.
On Cell, I write #[link_activity.refId;block=tbs:row], next right cell: [link_activity.refResponsible], next again: [link_activity.refName], and last: [link_activity.refStatus]

but nothing display.

It is not the good syntax ?

display on log file:

2019-01-25 13:36:13.926 ===== TRACE ===== SqlElement::getRefObj() : 'Activity' does not reference a valid object class
2019-01-25 14:36:43.748 ===== TRACE ===== SqlElement::getRefObj() : 'Activity' does not reference a valid object class
2019-01-25 13:41:01.985 ===== TRACE ===== SqlElement::getRefObj() : 'Ticket' does not reference a valid object class
2019-01-25 13:41:01.995 ===== TRACE ===== SqlElement::getRefObj() : 'Activity' does not reference a valid object class
2019-01-25 13:41:02.007 ===== TRACE ===== SqlElement::getRefObj() : 'Milestone' does not reference a valid object class
2019-01-25 13:42:12.320 ===== TRACE ===== SqlElement::getRefObj() : 'Ticket' does not reference a valid object class
2019-01-25 13:42:12.324 ===== TRACE ===== SqlElement::getRefObj() : 'Activity' does not reference a valid object class
2019-01-25 13:42:12.329 ===== TRACE ===== SqlElement::getRefObj() : 'Milestone' does not reference a valid object class

[link_activity.refId;block=tbs:row]
does not work.

I cannot list the activities linked to the project.

Your right. I was thinking that is tha activities of the project not the activities linked on project.
thks.