JHAT.BAT: Connection timeout when HFM Locking Entities

EPM/HFM v.11.1.2.4.

We are using JHAT.BAT for various tasks for HFM. It works fine, for example, to extract data and artifacts from HFM application.

Now we are trying to Lock/Unlock Entities. Unfortunately, this is a long activity and Lock/Unlock function terminates with a timeout exception.

Our script is as follows:

Logon("false", "", "user1", "passw1");

OpenApplication("HFMCLUST", "HFMAPPL");

SetPOV("Actual","2017", "{[Third Generation]}(1)", "YTD", "{JVGROUP.[Base]}", "<Entity Currency>", "ISBS", "[ICP Top]", "C1Top", "C2Top", "C3Top", "[None]");

Lock(); 

SetPOV("Actual","2018", "{[Third Generation]}(1)", "YTD", "{JVGROUP.[Base]}", "<Entity Currency>", "ISBS", "[ICP Top]", "C1Top", "C2Top", "C3Top", "[None]");