Syntax for goto one of Member

Dear E3D Master,

I need to modified PLAT due to some reason. Which is so many plat that i need to modified.

but i need to clik on SUPPO >> TRUNNI >> PLAT. which is 3 step to get the PLAT. 

if there any syntax to goto one of the member, in this case is PLAT.

I try several syntax, but still no luck to get the correct one. 

Here the sample. 

q mem of mem

Mback
1 PLAT 1 =335560777/10419
2 TRREDU 1 /A210-PS-148/MAKEUP
3 TRANCI 1 /A210-PS-148.1

goto plat of mem of mem for ce
(47,15) CP: Syntax error
In line 133 of Command/Form Input
goto ^^plat of mem of mem for ce
goto trunni of ce
(47,15) CP: Syntax error
In line 134 of Command/Form Input
goto ^^trunni of ce