ICX 6610 IP Access-list not working properly

Hi all,I’ve got an ICX6610 running router code that I’m currently using as my core switch with various VLANs. I’m trying to create a one-directional VLAN so that clients inside that VLAN cannot initiate connections out but other clients in other VLANs can connect to clients within. So far I’ve been going down the route of ip access-lists but hitting dead ends. Every time I apply an access list I lose connectivity both directions to the VLAN I’m trying to isolate. Does anyone have any recommendations or ideas that could help?Thank you!Rich